Seneca · On choosing our teachers

Letters 52.2

“But it is the fool,” you say, “who is inconsistent; nothing suits him for long.” But how or when can we tear ourselves away from this folly? No man by himself has sufficient strength to rise above it; he needs a helping hand, and some one to extricate him.

Seneca, Letters to Lucilius 52.2, translated by Richard Mott Gummere