Letters 95.29

And as the food itself is complicated, so the resulting diseases are complex, unaccountable, manifold, variegated; medicine has begun to campaign against them in many ways and by many rules of treatment.

Now I declare to you that the same statement applies to philosophy. It was once more simple because men’s sins were on a smaller scale, and could be cured with but slight trouble; in the face, however, of all this moral topsy-turvy men must leave no remedy untried. And would that this pest might so at last be overcome!

Seneca, Letters to Lucilius 95.29, translated by Richard Mott Gummere