Ready for any fortune. That's what philosophy gave me.

The source

"Ready for any fortune. That's what philosophy gave me." Diogenes said it in Diogenes Laertius, Lives 6. Translated by C. D. Yonge, 1853.

"what advantage he had derived from philosophy, he replied: If no other, at least this, that I am prepared for every kind of fortune"

C. D. Yonge, 1853, Diogenes Laertius, Lives 6. Anecdote reported by Diogenes Laertius (3rd century AD).

Who said it

Diogenes (c. 412–323 BC). The Cynic who lived in a jar in Athens and told Alexander the Great to get out of his sun.

Questions

Who said "Ready for any fortune. That's what philosophy gave me."?

Diogenes (c. 412–323 BC). Source: Diogenes Laertius, Lives 6.

What is the original wording?

what advantage he had derived from philosophy, he replied: If no other, at least this, that I am prepared for every kind of fortune (C. D. Yonge, 1853). Translated by C. D. Yonge, 1853.