A stoic quote by Marcus Aurelius from Meditations, XII.3

You are composed of three things: body, breath (life), intelligence. Of these the first two are yours insofar as it is your duty to take care of them; but the third alone is truly yours.
― Marcus Aurelius Meditations, XII.3

Stoic Sage in Training

A Sage is a theoretical perfect stoic - I can only attempt to act as I imagine he would act in my situation.