全世界最珍贵的资源存在于孩子的心智当中。
Our greatest natural resource is the minds of our children.
I had ambition not only to go farther than any man had been before, but as far as it was possible for a man to go.
There is no such thing as a moral or an immoral book. Books are well written, or badly written.
Algebraic geometry is the study of zeros of polynomials.
生存下来的不是最强壮的物种，也不是最聪明的物种，而是最能适应变化的物种。