Persistence is the key to unlocking the mysteries of medicine.

The best fertilizer for any piece of land is the footprints of its owner.

I’m not afraid to start over.

Society can and does execute its own mandates， and if it issues wrong mandates instead of right， or any mandates at all in things with which it ought not to meddle， it practices a social tyranny more formidable than many kinds of political oppression， since， though not usually upheld by such extreme penalties， it leaves fewer means of escape， penetrating much more deeply into the details of life， and enslaving the soul itself.

太阳每天都是新的。

一个国家的法律如果不能保证公平公正、不能惩恶扬善、不能保障人民的利益，就不能当做法律。