There are nine countries in the world that have nuclear weapons. There are about 27,000 nuclear weapons total on the planet. The countries that have nuclear weapons deploy them ready for use and have doctrines saying that they would use them in certain circumstances.

If I were to name the three most precious resources of life, I should say books, friends, and nature.

I have discovered the secret of happiness - it is work, either with the hands or the head. The moment I have something to do, the draughts are open and my chimney draws, and I am happy.

When I look up into the starry heavens at night and reflect upon what it is I really see there, I am constrained to say, ´there is no god´.

Man is, and always has been, a maker of gods. It has been the most serious and significant occupation of his sojourn in the world.

In the printed page the only real things are the paper and the ink; the white spaces play the same part in aiding the eye to take in the meaning of the print as do the black letters.

The Kingdom of Heaven is not a place, but a state of mind.