A quote
And why should he not be content with having grown to such a height that Fortune cannot reach her hands to it? He is therefore above earthly things, equal to himself under all conditions,—whether the current of life runs free, or whether he is tossed and travels on troubled and desperate seas; but this steadfastness cannot be gained through such hair-splittings as I have just mentioned. The mind plays with them, but profits not a whit; the mind in such cases is simply dragging philosophy down from her heights to the level ground.
Seneca·Letter 111 — On the Vanity of Mental Gymnastics (§4)·trans. Gummere