What was it like to wake up after having never gone to sleep? That was when you were born.

The greater part of human activity is designed to make permanent those experiences and joys which are only lovable because they are changing.

There was a young man who said though, it seems that I know that I know, but what I would like to see is the I that knows me when I know that I know that I know.

When your eyes are functioning well you don't see your eyes. If your eyes are imperfect you see spots in front of them. That means there are some lesions in the retina or wherever, and because your eyes aren't working properly, you feel them. In the same way, you don't hear your ears. If you have a ringing in your ears it means there's something wrong with your ears. Therefore, if you do feel yourself, there must be something wrong with you. Whatever you have, the sensation of I is like spots in front of your eyes - it means something's wrong with your functioning.

No worthwhile life can be lived without risks, despite current American superstitions to the contrary.

Some believe all that parents, tutors, and kindred believe. They take their principles by inheritance, and defend them as they would their estates, because they are born heirs to them.

Things are as they are. Looking out into it the universe at night, we make no comparisons between right and wrong stars, nor between well and badly arranged constellations.