The true value of a forest is measured not in board feet, but in biodiversity.

In the realm of quantum gravity, the fabric of spacetime is woven from the threads of entanglement.

过去总是紧张的，而未来是完美的。

每一个数学问题都是一个等待解决的谜题，每一个解答都是向理解现实结构迈进的一步。

The arithmetic of algebraic groups is a key to understanding the Langlands conjectures.

Vote for the man who promises least; he'll be the least disappointing.

The best way to untangle a knotty tangle is not to “untie” the knots， but to keep pulling the loops apart wider and wider. Just make the mess as big， loose and open as possible. As you open up the knots they will unravel themselves. Works on cords， strings， hoses， yarns， or electronic cables.