Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence.

We are all in the gutter, but some of us are looking at the stars.

My goal is simple. It is a complete understanding of the universe, why it is as it is and why it exists at all.

The future is not a result of choices among alternative paths offered by the present, but a place that is created—created first in the mind and will, created next in activity.

时间被认为只有一个维度，而空间有三个维度。

The beauty of chemistry is that it's everywhere—you just have to look for it.