Letters 92.33

When the soul has transported itself to this lofty height, it regards the body also, since it is a burden which must be borne, not as a thing to love, but as a thing to oversee; nor is it subservient to that over which it is set in mastery. For no man is free who is a slave to his body. Indeed, omitting all the other masters which are brought into being by excessive care for the body, the sway which the body itself exercises is captious and fastidious.

Seneca, Letters to Lucilius 92.33, translated by Richard Mott Gummere