Without deep reflection one knows from daily life that one exists for other people.
If you want your children to be intelligent, read them fairy tales. If you want them to be more intelligent, read them more fairy tales.
Peace cannot be kept by force; it can only be achieved by understanding.
Human beings, in their thinking, feeling and acting are not free agents but are as causally bound as the stars in their motion.
I am satisfied with the mystery of the eternity of life.
Everyone knew it was impossible, until a fool who didn't know came along and did it.