The true teacher defends his pupils against his own personal influence. He inspires self-trust. He guides their eyes from himself to the spirit that quickens him. He will have no disciple.

The real voyage of discovery consists not in seeking new landscapes, but in having new eyes.

The trouble with most people is that they think with their hopes or fears or wishes rather than with their minds.

The history of mathematics is a history of human thought and progress.

你牧师讲不了道是因为我。

The earth gives us its treasures, but it's our duty to give back more than we take.