For man is a plant, not fixed in the earth, nor immovable, but heavenly, whose head, rising as it were from a root upwards, is turned towards heaven.
PlutarchThe conduct of a wise politician is ever suited to the present posture of affairs. Often by foregoing a part he saves the whole, and by yielding in a small matter secures a greater.
PlutarchWe ought to give our friend pain if it will benefit him, but not to the extent of breaking off our friendship; but just as we make use of some biting medicine that will save and preserve the life of the patient. And so the friend, like a musician, in bringing about an improvement to what is good and expedient, sometimes slackens the chords, sometimes tightens them, and is often pleasant, but always useful.
Plutarch