Love is metaphysical gravity.

Pollution is merely a resource that isn't being used properly.

Don't fight forces, use them.

Human beings are the only creatures on the planet that tell time and think they have to earn a living.

It is one of the strange facts of experience that when we try to think about the future, our thoughts jump backwards. It may well be that nature has some fundamental metaphysical law by which opening up what we call the future also opens up the past in equal degree.

We are not going to be able to operate our Spaceship Earth successfully nor for much longer unless we see it as a whole spaceship and our fate as common. It has to be everybody or nobody.

You can never learn less; you can only learn more. The reason I know so much is because I have made so many mistakes.