In the end, you’re measured not by how much you undertake but by what you finally accomplish.
You must be the change you wish to see in the world.
The past is always tense, the future perfect.
除非把爱国主义从人类中剔除，否则世界永远不会安宁。
Science teaches us humility, for every discovery reveals the vastness of our ignorance.
We are all connected; to each other, biologically. To the earth, chemically. To the rest of the universe atomically.