Nemo quam bene vivat sed quam diu curat, cum omnibus possit contingere ut bene vivant, ut diu nulli. - Seneca

I will tell you: that perfect man, who has attained virtue, never cursed his luck, and never received the results of chance with dejection; he believed that he was citizen and soldier of the universe, accepting his tasks as if they were his orders. Whatever happened, he did not spurn it, as if it were evil and borne in upon him by hazard; he accepted it as if it were assigned to be his duty. “Whatever this may be,”he says, “it is my lot; it is rough and it is hard, but I must work diligently at the task.”

Plus tamen tibi et viva vox et convictus quam oratio proderit; in rem praesentem venias oportet, primum quia homines amplius oculis quam auribus credunt, deinde quia longum iter est per praecepta, breve et efficax per exempla.

“What progress, you ask, have I made? I have begun to be a friend to myself.” That was indeed a great benefit; such a person can never be alone. You may be sure that such a man is a friend to all mankind.