The following are a collection of all the Principle Doctrines and Vatican Sayings on Friendship:
(For reference puposes on the discussion of developing friendship).
PD27: Of all the things which wisdom acquires to produce the blessedness of the complete life, far the greatest is the possession of friendship.
PD28: The same knowledge that makes one confident that nothing dreadful is eternal or long-lasting also recognizes, in the face of these limited evils, the security afforded by friendship.
VS23: Every friendship is worth choosing for its own sake, though it takes its origin from the benefits.
VS28: We must not approve either those who are always ready for friendship, or those who hang back, but for friendship’s sake we must run risks.
VS34: It is not so much our friends' help that helps us, as it is the confidence of their help.
VS39: He is no friend who is continually asking for help, nor he who never associates help with friendship. For the former barters kindly feeling for a practical return, and the latter destroys the hope of good in the future.
VS52: Friendship dances around the world, bidding us all to awaken to the recognition of happiness.
VS56: The wise man feels no more pain, when being tortured himself than when his friend is tortured.
VS57: On occasion a man will die for his friend, for if he betrays his friend, his whole life will be confounded by distrust and completely upset.
VS66: Let us show our feeling for our lost friends, not by lamentation, but by meditation.
VS78: The truly noble man busies himself chiefly with wisdom and friendship, of which the one is an understandable good but the other is immortal.