No matter what he does, every person on earth plays a central role in the history of the world. And normally he doesn't know it.

The more you love what you do, the more successful you'll be.

Every book is a quotation; and every house is a quotation out of all forests, and mines, and stone quarries; and every man is a quotation from all his ancestors.

人类心智能够理解宇宙，因为宇宙已经产生了能够理解它的心智。