Even while a thing is in the act of coming into existence, some part of it has already ceased to be.

The secret of all victory lies in the organization of the non-obvious.

At day's first light have in readiness, against disinclination to leave your bed, the thought that "I am rising for the work of man."

From Apollonius I learned freedom of will and undeviating steadiness of purpose; and to look to nothing else, not even for a moment, except to reason; and to be always the same, in sharp pains, on the occasion of the loss of a child, and in long illness.

You are a little soul bearing about a corpse, as Epictetus used to say.

The passing minute is every man's equal possession but what has once gone by is not ours.

Purge your mind of all aimless and idle thoughts, especially those that pry into the affairs of others or wish them ill.