The Stoics proceeded from them by changing the practical into the the theoretical. They were of the opinion that the actual dispensing of with everything that can be discarded is not required, but that it is sufficient for us constantly to regard possession and enjoyment as dispensible, and as held in the hand of chance; for then the actual privation, should it eventually occur, would not be unexpected, nor would it be a burden. We can in all circumstances possess and enjoy everything, only we must always keep in mind the conviction of the worthlessness and dispensibleness of such good things on the one hand, and their uncertainty and perishableness on the other; consequently, we must entirely underrate them all, and be ready at all thime to give them up.
Arthur Schopenhauer
So it's okay for a Marxist professor to wear Nike tennis shoes.

