We smoked the way other American families would have wine with dinner. For us, it was our sacrament. It was something that made a great life sweeter in every possible way.

I guess I so desperately want to see us put this planet right. It's so horrifying to me that a fifth of us are starving every night, and that forty thousand children die every single day.

If you are searching for sacred knowledge and not just a palliative for your fears, then you will train yourself to be a good skeptic.

Science reserves the highest reward for those of you who disprove our most cherished beliefs. At any moment someone from any walk of life could come forward and be responsible for a complete revision of our view of everything.

I don't have any faith, but I have a lot of hope, and I have a lot of dreams of what we could do with our intelligence if we had the will and the leadership and the understanding of how we could take all of our intelligence and our resources and create a world for our kids that is hopeful.

A lot of people have this ego need that makes them want to believe that Earth is the center of the universe and humans are the most important species, the supreme expression of creation.

The only gratification that science denies to us is deception.