Display MoreBailey's Fragment 10 alludes to Epicurus having declared HΔONH ("pleasure") to be TAΓAΘON or “the good”.
The Tetrapharmakos also indicates that TAΓAΘON ("the good") is HΔONH ("pleasure").
Athanaeus seems to record Epicurus as identifying TAΓAΘON ("the good") with HΔONH ("pleasure") in Deipnosophists (U67). Diogenes Laërtius also documents this attestation in Lives of Eminent Philosophers.
Seneca records Epicurus as having written HIC SVMMVM BONVM VOLVPTAS EST, “here our highest good is pleasure” (Letters To Lucilius 21.10). Lucretius also employs the phrase BONVM SVMMVM in De Rerum Natura, Book VI.
In his Epistle to Menoikeus, Epicurus declares HΔONH ("pleasure") to be the ΠPOTON AΓAΘON the "first good". Interestingly, he later declares TO MEΓIΣTON AΓAΘON ΦPONHΣIΣ, that "the greatest” or “highest good” is “prudence” (or “practical wisdom”). Epicurus also describes ΦPONHΣIΣ ("prudence") as being the APXH, the "beginning" or "foundation". Incidentally, he also identifies HΔONH ("pleasure") as both the APXHN ("beginning") and TEΛOΣ ("end").
In KD7, Epicurus refers to AΣΦAΛEIAN (“security”) as a ΦΥΣEΩΣ AΓAΘΟΝ (“natural good”). Similarly, in KD6 (among a variety of translations), he describes any means by which to acquire ΘAPPEIN (“confidence” or “the assurance of safety”) from or between people as being a ΦΥΣΙΝ […] AΓAΘΟΝ (also translated as a “natural good”).
Philodemus contrasts the general ideas of TΩN AΓAΘΩN with TΩN KAKΩN or “the good” with “ill” (U38); of interest, later, Usener translates Philodemus’ phrase TON XPHΣTON (tón khrēstón) as “the good” (U180).
I just read Philodemus' treatise "On Death" and found an instance of the phrase TO MEΓIΣTON AΓAΘON (19.1). Throughout the treatise, he alludes to the pursuit and enjoyment of TOY KPATIΣTON BIOY, or "the best life" (38.14).