True leadership means making tough decisions today for a better tomorrow.
We don't receive wisdom; we must discover it for ourselves after a journey that no one can take for us or spare us.
The greatest leader is not necessarily the one who does the greatest things. He is the one that gets the people to do the greatest things.
The only way to do great work is to love what you do.
今天我們種下的每一棵樹，都是留給素未謀面的后代的遺產(chǎn)。
Science is the poetry of reality.
當我們認為我們被理解了，我們就會覺得我們可以控制周圍的世界。