可持续性不是一种选择，而是我们对后代的责任。
Fear can hold you prisoner, hope can set you free.
In mathematics, the art of proposing a question must be held of higher value than solving it.
Never underestimate the power of a simple idea.
La realidad no es siempre probable, o verosímil.
There is no better teacher than history in determining the future……There are answers worth billions of dollars in a history book.
The only way to do great work is to love what you do.