No man is happy who does not think himself so.

Life is a campaign, a brief staying in a strange region.

Let it judge that nothing is either bad or good which can happen equally to the bad man and the good. For that which happens equally to him who lives contrary to nature and to him who lives according to nature, is neither according to nature nor contrary to nature.

And thou wilt give thyself relief, if thou doest every act of thy life as if it were the last.

Death, like birth, is a secret of Nature.

How many together with whom I came into the world are already gone out of it.

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.