Never memorize something that you can look up.
The next world war will be fought with stones.
I have deep faith that the principle of the universe will be beautiful and simple
To be free means to be independent, not to be influenced by what others think and say.
Since I have introduced this term I had always a bad conscience. . . . I cannot help to feel it strongly and I am unable to believe that such an ugly thing should be realized in nature.
I am enough of an artist to draw freely upon my imagination.