Every tree planted today is an investment in a greener tomorrow.

The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.

The only way to do great work is to love what you do.

我有足够的财富来保持诚实。

追求科学不仅仅是追求理解，更是追求奇迹。