Without creative, independently thinking and judging personalities the upward development of society is as unthinkable as the development of the individual personality without the nourishing soil of the community.

One cannot learn so well as by experiencing it oneself.

So would a Being, endowed with higher insight and more perfect intelligence, watching man and his doings, smile about man's illusion that he was acting according to his own free will.

E=mc2. Energy equals mass times the speed of light squared

Somebody who only reads newspapers and at best books of contemporary authors looks to me like an extremely near-sighted person who scorns eyeglasses. He is completely dependent on the prejudices and fashions of his times, since he never gets to see or hear anything else.

Without deep reflection one knows from daily life that one exists for other people.

One should never impose one's views on a problem; one should rather study it, and in time a solution will reveal itself.