原文英文：The most merciful thing in the world， I think， is the inability of the human mind to correlate all its contents. We live on a placid island of ignorance in the midst of black seas of infinity， and it was not meant that we should voyage far.
The most important thing in mathematics is to understand the concepts, not just to memorize the formulas.
The computer is the most remarkable tool that we've ever come up with. It's the equivalent of a bicycle for our minds.