Inactivity is death.

Without that passion and urge, there is a gradual oozing out of hope and vitality, a settling down on lower levels of existence, a slow merging into non-existence. We become prisoners of the past and some part of its immobility sticks to us.

There is a subtle danger in a man thinking that he is "fixed" for life. It indicates that the next jolt of the wheel of progress is going to fling him off.

We seldom break our leg so long as life continues a toilsome upward climb. The danger comes when we begin to take things easily and choose the convenient paths.

There's a tremendous bias against taking risks. Everyone is trying to optimize their ass-covering.

People are mistaken when they think that technology just automatically improves. It does not automatically improve. It only improves if a lot of people work very hard to make it better, and actually it will, I think, by itself degrade, actually. You look at great civilizations like Ancient Egypt, and they were able to make the pyramids, and they forgot how to do that. And then the Romans, they built these incredible aqueducts. They forgot how to do it.