The self-styled practical man of affairs who pooh-poohs philosophy as a lot of windy notions is himself a pragmatist or a positivist, and a bad one at that, since he has given no thought to his position.

We are at the moment looking at space as something to be entered by the tremendous thrust of a rocket because that is the attitude of attacking the unknown. And that causes us not to realize that we are already on the most magnificently equipped spaceship, which could hardly be improved upon. It has got a source of temperature and energy just at the right distance from it. It's beautifully equipped with oxygen, with food supplies, with all kinds of delightful things to do while on the journey.... and it's traveling through space at a colossal speed... and it's called the planet Earth.

The religious idea of God cannot do full duty for the metaphysical infinity.

Philosophy is man’s expression of curiosity about everything and his attempt to make sense of the world primarily through his intellect.

If you love a person, you say to that person, "Look, I love you, whatever that may be. I've seen quite a bit of it and I know there's lots that I haven't seen, but still it's you and I want you to be what you want to be. And I won't be happy if I've got you in a cage. You'd be a bird without song."

...[W]ords can be communicative only between those who share similar experiences.

The destination of life is this eternal moment.