Seneca · On quibbling as unworthy of the philosopher
Letters 48.1
In answer to the letter which you wrote me while travelling,—a letter as long as the journey itself,—I shall reply later. I ought to go into retirement, and consider what sort of advice I should give you. For you yourself, who consult me, also reflected for a long time whether to do so; how much more, then, should I myself reflect, since more deliberation is necessary in settling than in propounding a problem! And this is particularly true when one thing is advantageous to you and another to me. Am I speaking again in the guise of an Epicurean?
Seneca, Letters to Lucilius 48.1, translated by Richard Mott Gummere