Those who deny freedom to others, deserve it not for themselves; and, under a just God, can not long retain it.

The rule of the wild is survival of the fittest.

Policy without evidence is like a ship without a compass.

"The only real elegance is in the mind; if you've got that, the rest really comes from it."

Chemistry is the bridge between the microscopic world and the reality we see every day.

有时候写作最难的部分就是开始。