Language is not a cultural artifact that we learn the way we learn to tell time or how the federal government works. Instead, it is a distinct piece of the biological makeup of our brains.

Persistence is very important. You should not give up unless you are forced to give up.

译文：高贵的人虽然自以为尊贵，但在我看来却如尘埃;低贱的人虽然自以为卑微，但在我看来却重如千钧。

The essence of mathematics is not to make simple things complicated, but to make complicated things simple.

"Los personajes más oscuros suelen ser los que más luz arrojan sobre la condición humana."

When you light a candle, you also cast a shadow.