Letters 95.19

Mark the number of things—all to pass down a single throat—that luxury mixes together, after ravaging land and sea. So many different dishes must surely disagree; they are bolted with difficulty and are digested with difficulty, each jostling against the other. And no wonder, that diseases which result from ill-assorted food are variable and manifold; there must be an overflow when so many unnatural combinations are jumbled together. Hence there are as many ways of being ill as there are of living.

Seneca, Letters to Lucilius 95.19, translated by Richard Mott Gummere