Die größte Gefahr im Leben ist, dass man zu viele Vorsichtsmaßnahmen trifft.

Sustainability isn't a choice—it's our responsibility to the next generation.

成功不仅在于你取得了什么，还在于你如何取得它。

In science, the credit goes to the man who convinces the world, not to the man to whom the idea first occurs.

The art of teaching consists in large part of the ability to awaken the natural curiosity of young minds and to satisfy it with the nourishment of knowledge.