Never use a credit card for credit. The only kind of credit， or debt， that is acceptable is debt to acquire something whose exchange value is extremely likely to increase， like in a home. The exchange value of most things diminishes or vanishes the moment you purchase them. Don’t be in debt to losers.

The true measure of our success will be what we leave for future generations.

禁欲主义原则从来没有被任何生物一贯坚持过，也永远不会被如此坚持。

——在逆境中始终百折不挠，1913年

写作是为无声者发声。