Life is not easy for any of us. But what of that? We must have perseverance and above all confidence in ourselves. We must believe that we are gifted for something and that this thing must be attained.

Human kindness has never weakened the stamina or softened the fiber of a free people. A nation does not have to be cruel to be tough.

The truth is, we are all capable of great evil and great good. It is the choices we make that define us.

时间是决定市场走势的最重要因素。

"Every discovery in science is a step closer to a cure."

Every discovery builds on the work of those who came before us.

The rules of survival never change, whether you’re in a desert or in an downtown street: you need to be hydrated, you need food, and you need shelter.