作家应当是他时代的见证者，同时也是世界的创造者。
El escritor debe ser un testigo de su tiempo, pero también un creador de mundos.
The deepest principle in human nature is the craving to be appreciated.
Happiness depends upon ourselves.
Hard work beats talent when talent doesn't work hard.
Learning consists in the modification of certain mediating processes which operate between the stimulus and the response.
Investors should avoid trying to time the market; it's a losing strategy.