In the old world, you devoted 30% of your time to building a great service and 70% of your time to shouting about it. In the new world, that inverts.

The human heart, at whatever age, opens only to the heart that opens in return.

Forests are not just carbon sinks—they are life sources.

"I’m a very positive thinker, and I think that is what helps me the most in difficult moments."

物理学的美丽在于它能够用最深刻的理论解释最简单的现象。

The Internet is a powerful tool for education, but it is not a substitute for the teacher.

The United States has foolishly given Pakistan more than 33 billion dollars in aid over the last 15 years, and they have given us nothing but lies & deceit, thinking of our leaders as fools. They give safe haven to the terrorists we hunt in Afghanistan, with little help. No more!

理性是冰冷的太阳，它给予光明却不给予温暖。

We use mathematics to understand the markets, not to predict them.