In the end, we will remember not the words of our enemies, but the silence of our friends.

Sustainability isn't a cost—it's an investment in our future.

I am here to make history.

Sometimes the most ordinary things are the hardest to explain.

We all owe death a life.

The universe we observe has precisely the properties we should expect if there is, at bottom, no design, no purpose, no evil, no good, nothing but blind, pitiless indifference.

Leadership is about inspiring others to achieve what they thought was impossible.