Coal isn't the problem - how we use it is. The solution lies in cleaner technologies and better utilization.

The desire for recognition is a fundamental human need.

我常说同样的话：要想赢就必须受苦。

The world is full of suffering, it is also full of overcoming it.

The holographic principle suggests that the information content of a region of space can be thought of as encoded on the boundary of that region.

"I believe in the power of books to change lives."

数学的本质不是把简单的事情复杂化，而是把复杂的事情简单化。

"Escribir es un acto de resistencia contra el olvido."