The only real prison is fear, and the only real freedom is freedom from fear.

The only fence against the world is a thorough knowledge of it.

Sustainable fishing isn't an option—it's the only path forward if we want our oceans to thrive.

The only way to save a rhinoceros is to save the environment in which it lives, because there's a mutual dependency between it and millions of other species of both animals and plants.

幸福在于成就的喜悦和创造努力的激动。

老虎起跳之前,必须先趴下蓄力然后才跳起来。

I’m not a guy that’s going to let my love for my name down.

我头上的星空和我心中的道德律。