Letters 120.13

Necessarily, therefore, the man has shown himself great who has never grieved in evil days and never bewailed his destiny; he has given a clear conception of himself to many men; he has shone forth like a light in the darkness and has turned towards himself the thoughts of all men, because he was gentle and calm and equally compliant with the orders of man and of God.

Seneca, Letters to Lucilius 120.13, translated by Richard Mott Gummere