Letters 109.1

You expressed a wish to know whether a wise man can help a wise man. For we say that the wise man is completely endowed with every good, and has attained perfection; accordingly, the question arises how it is possible for anyone to help a person who possesses the Supreme Good.

Good men are mutually helpful; for each gives practice to the other’s virtues and thus maintains wisdom at its proper level. Each needs someone with whom he may make comparisons and investigations.

Seneca, Letters to Lucilius 109.1, translated by Richard Mott Gummere