Letters 65.22

Never shall this flesh drive me to feel fear, or to assume any pretence that is unworthy of a good man. Never shall I lie in order to honour this petty body. When it seems proper, I shall sever my connexion with it. And at present, while we are bound together, our alliance shall nevertheless not be one of equality; the soul shall bring all quarrels before its own tribunal. To despise our bodies is sure freedom.

Seneca, Letters to Lucilius 65.22, translated by Richard Mott Gummere