Remember the end. Attributed to Chilo, Spartan Philosopher, but according to Ausonius "some think that Solon said this to Croesus." Whatsoever thou takest in hand, remember the end —Ecclesiasticus 7, 36. (See also Deut. 32, 29). Remember thy end, and let enmity cease.—Ecclesiasticus., 28, 6. (See Latin, " Finem respice.")
Be surety and ruin is at hand. Attributed to Thales of Miletus. (“He that hateth suretiship is sure” is a proverb from the Bible that warns against cosigning for strangers.)
Most men are bad. Attributed to Bias of Priene.
The mean is best. Attributed to Cleobulus of Lindos.
Know the proper season. Attributed to Pittacus of Mitylene. (Season's of life)
Practice is everything. Attributed to Periander of Corinth. (Life is an opportunity to learn and improve)
Whoever is wise is apt to suspect and be diffident of himself, and upon that account is willing to "hearken unto counsel" ; whereas the foolish man, being in proportion to his folly full of himself, and swallowed up in conceit, will seldom take any counsel but his own, and for that very reason,
because it is his own. —John Balguy
Wisdom alone is the true and unalloyed coin for which we ought to exchange all things, for this and with this everything is bought and sold—fortitude, temperance, and justice; in a word, true virtue subsists with wisdom. —Plato