Nothing is evil which is according to nature.

A noble man compares and estimates himself by an idea which is higher than himself; and a mean man, by one lower than himself. The one produces aspiration; the other ambition, which is the way in which a vulgar man aspires.

Enter others' minds and let them enter yours.

If you are distressed by something, it is due to your own estimate of it; and you have the power to change it at will.

Limit time to the present. Meditate upon your last hour.

It is possible to depart from life at this moment. Have this thought in mind whenever you act, speak, or think.

Do not act as if you were going to live ten thousand years. Death hangs over you. While you live, while it is in your power, be good.