Marco rubio calls me a little boy … marco rubio 'd be the oldest president of the united states.

Intuition is the clear conception of the whole at once.

My day-to-day varies. I do some public speaking. I talk to school groups.

The question that will decide our destiny is not whether we shall expand into space. It is: shall we be one species or a million? A million species will not exhaust the ecological niches that are awaiting the arrival of intelligence.

Sometimes I would almost rather have people take away years of my life than take away a moment.

I have music on when I write. I don't like the isolation otherwise and find the silence deadening.