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 'Tis pleasant, when a tempest drives the waves in the wide sea, to view the sad distress of others from the land; not that the pleasure is so sweet that others suffer, but the joy is this, to look upon the ills from which yourself are free. It likewise gives delight to view the bloody conflicts of a war, in battle ranged all over the plains, without a share of danger to yourself: But nothing is more sweet than to attain the serene 'tho lofty heights of true philosophy, well fortified by learning of the wise, and thence look down on others, and behold mankind wandering and roving every way, to find a path to happiness; they strive for wit, contend for nobility, labor nights and days with anxious care for heaps of wealth, and to be ministers of state.
 O wretched are the thoughts of men! How blind their souls! In what dark roads they grope their way, in what distress is this life spent, short as it is! Don't you see Nature requires no more than the body free from pain, she may enjoy the mind easy and cheerful, removed from care and fear?
 And then we find a little will suffice the nature of our bodies, and take off every pain; nay will afford much pleasure, and Nature wishes for nothing more desirable than this. What tho' no golden images of boys, holding forth blazing torches in their hands, to light the midnight revels of the great, adorn they house? What tho' thy rooms shine not with silver, nor are overlaid with gold, nor do thy arched gilded roofs rebound with the strong notes of music? Yet we find men sweetly indulge their bodies as they lie together on the soft and tender grass, hard by a river's sie, under the boughs of some high tree, without a heap of wealth; chiefly when the spring smiles, and the season of the year sprinkles the verdant herbs with flowery pride. Nor will a burning fever sooner leave the body when you are tossed in clothes embroidered on beds of blushing purple, than when you lie in coarsest blankets.
 Since riches then afford no comfort to our bodies, nor nobleness, nor the glory of ambition, 'tis plain you are to think they do the mind no good. If, when you behold your furious legions embattled over the plains, waging mock war, or when you view your navy stand eager to engage, or bear away over the wide sea, if struck with sights like these your fearful superstitions and the dread of death forsake your mind, and leave your breast serene, and free from care, 'twere something.
 But if these things are vain and all grimace, and the truth is that nor the fears of men, nor following cares fly from the sound of alarms or cruel darts, but boldy force their way among the kings and mighty of the earth; nor do they homage pay to shining gold, nor the gay splendor of a purple robe. Do you doubt but all this stuff is want of sense, and all our life is groping in the dark?
 For as boys tremble and fear every thing in the dark night, so we, in open day, fear things as vain, and little to be feared, as those that children quake at in the dark, and fancy making toward them. This terror of the mind, this darkness then, not the sun's beams, nor the bright rays of day can scatter, but the light of nature and the rules of reason.
 But now, come on, remember you attend, while I explain by what motion the genial seeds of matter produce the various kinds of bodies, and dissolve them when produced, and by what force compelled they act, and what celerity of motion they possess to force their way through all the mighty void.
 For certain it is that no seeds of matter stick close and unmoved among themselves; for we see every thing grows less, and perceive all things wear away by a long tract of time, and old age removes them quite from our sight. And yet the mass of things still remains safe and entire; and for this reason, because the particles of matter which fall off, lessen the bodies from which they fall, but add to those to which they join. There they force to decay; those, on the contrary, they increase: nor do they remain in this posture. And thus the universe of things is continually renewing; generations succeed one another, one kind of animal increases, another wastes away; and in a short time the living creation is entirely changed, and, like racers, delivers the lamp of life to those that are behind.
 But if you think the seeds of things can be at rest, and, being themselves unmoved, can give motion to bodies, you wander wildly from the way of true reason. For since all the seeds of things are rambling through the void, they must necessarily be born along either by their own natural gravity, or by the outward stroke of something else; for then these seeds tending downward meet with others, they must all fly off, and rebound a different way, and no wonder, since they are hard bodies and of solid weight; nor is there any thing behind to stop the motion. But, that you may perceive more plainly how all the seeds of matter are tossed about, you must recollect that there is no such thing in the universe as the lowest place, where the first seeds may remain fixed, because I have shown fully, and proved by certain reason, that space is without end, without bounds immense, and lies extended every way.
This being plain, there can be no rest possibly allowed to these first seeds, for ever wandering through the empty void; but being tossed about with constant and different motion, and striking against other bodies, some rebound to a great distance, others fly off, but not so far; such of them as rebound but for a small distance, their contexture being more close, and being hindered by their natural twinings, these compose the solid root of rocks, and the hard bodies of iron, and a few other things of the same nature; but such as wander widely through the void, and moved by the blow, fly further off, and rebound to greater distances; these compose the thin air, and the Sun's bright light.
Besides, there are many seeds keep wandering through the void that are refused all union with other seeds, nor could ever be admitted to join their motion to anything else. An instance or representation of this, as I conceive, is always at hand, and visibly before our eyes. When the Sun's light shoots its rays through a narrow chink into a darkened room, you shall see a thousand little atoms dance a thousand ways through the empty space, and mingle in the very rays of light, engaging, as it were, in endless war, drawing up their little troops, never taking breath, but meeting and exercising their hostile fury with constant blows. And hence you may collect in what manner the principles of things are tossed in this empty void; so small an instance will give you an example of these extraordinary motions, and open a way to your knowledge of greater events.
But here it is fit you should apply yourself more closely to observe these bodies which seem so disturbed in the Sun's beams; for it appears by these disorders that there are certain secret principles of motion in the seeds themselves, though invisible to us, for some of these motes you will see struck by secret blows, and forced to change their course, sometimes driven back, and again returning, now this, now that, and every other way; and this variety of motion is certainly in the very seeds, for the principles of things first move of themselves, then compound bodies that are of the least size, and approach nearest, as it were, to the exility of the first seeds, are by them struck with blows unseen, and put into motion, and these again strike those that are something larger; so from first seeds all motion still goes on, til at length it becomes sensible to us; and thus we see how these motes that play in the Sun's beams are moved, though the blows by which they are driven about do not so plainly appear to us.
And now, my Memmius, you may in brief, from the following instance, collect how rapid is the motion of the first seeds; for when the morning spreads the Earth with rising light, and sweet variety of birds frequent the woods, and fill each grove with most delightful notes through the soft air, every one perceives, and the thing we see is plain, how suddenly, and in a moment, the rising Sun covers the world and shines with instant light. But that vapour, that glittering ray, which the Sun sends forth, does not pass through mere empty space, and therefore is forced to move slower, as it has resisting air to part and divide as it goes; nor are the principles that compose this ray simple first seeds, but certain little globular bodies made up of these first seeds that pass through the air; and these first seeds being agitated by various motions, these little bodies which are formed of them are retarded by different motions within themselves, and are likewise hindered from without by other bodies, and so are obliged to move the slower.
But seeds that are solid and simple in their nature, when they pass through a pure void, having nothing to stop them from without, and being one, and uncompounded through all their parts, are carried at once, by an instant force, to the point to which they first set out. Such seeds much exceed the rays of the Sun in their motion, and be carried on with much more celerity; they must pierce through longer tracts of space in the same time in which the sunbeams pass through the air; for these seeds cannot agree together by design to move slowly, nor stop in the air to search into particulars, and be satisfied for what reason their several motions are thus carried on and disposed.
But some object to this, fools as they are, and conceive that simple matter cannot of itself, without the assistance of the gods, act so agreeably to the advantage and convenience of mankind, as to change the seasons of the year, to produce the fruits, and do other things which Pleasure, the deity and great guide of life, persuades men to value and esteem. It could not induce us to propagate our race, by the blandishments of tender love, lest the species of mankind should be extinct, for whose sake they pretend the gods made all the beings of the world; but all conceits like these fall greatly from the dictates of true reason - For though I were entirely ignorant of the rise of things, yet from the very nature of the heavens, and the frame of many other bodies, I dare affirm and insist that the nature of the world was by no means created by the gods upon our account, it is so very faulty and imperfect; which, my Memmius, I shall fully explain. But now let us explain what remains to be said of motion.
 Now since there is so great a plenty of seeds, that all the ages of men would not be sufficient to number them, and the same power, the same nature remains, that can dispose the seeds of things in any other place, by the same rule as they united in this world of ours, we must needs confess, there are other worlds in other parts of the universe, possessed by other kinds of inhabitants, both of men and beasts.