Common sense consists of those layers of prejudice laid down before the age of 18.

Humankind's desire for peace can be realized only by the creation of a world government.

Keep fighting until the last buzzer sounds.

An attempt at visualizing the Fourth Dimension: Take a point, stretch it into a line, curl it into a circle, twist it into a sphere, and punch through the sphere.

The significant problems we have cannot be solved at the same level of thinking with which we created them.

I don't believe in mathematics.

I am a determinist. As such, I do not believe in free will...Practically, I am, nevertheless, compelled to act as if freedom of the will existed. If I wish to live in a civilized community, I must act as if man is a responsible being.