A successful man is he who receives a great deal from his fellow men, usually incomparably more than corresponds to his service to them. The value of a man, however, should be seen in what he gives and not in what he is able to receive.

I think that only daring speculation can lead us further and not accumulation of facts.

[I] must seek in the stars that which was denied [to me] on earth.

It is the supreme art of the teacher to awaken joy in creative expression and knowledge.

I now see the necessity of a beginning.

The woman who follows the crowd will usually go no further than the crowd. The woman who walks alone is likely to find herself in places no one has ever been before.

If I were not a Jew I would be a Quaker.