Happiness is a state of mind. It's just according to the way you look at things.

The quest for a unified theory of physics is one of the greatest intellectual adventures of our time.

出自汉·桓宽《盐铁论·相刺》。释义：碎玉满箱，算不得拥有财宝；读了几箱子的书，也不等于就掌握了其中的道理。

最大的风险是不承担任何风险。

"Think wrongly, if you please, but in all cases, think for yourself."