Meantime, the world in which we exist has other aims. But it will pass away, burnt up in the fire of its own hot passions; and from its ashes will spring a new and younger world, full of fresh hope, woth the light of morning in its eyes.

Only mathematics and mathematical logic can say as little as the physicist means to say.

Education ought to foster the wish for truth, not the conviction that some particular creed is the truth.

Your writing is never as good as you hoped; but never as bad as you feared.

Science does not aim at establishing immutable truths and eternal dogmas; its aim is to approach the truth by successive approximations, without claiming that at any stage final and complete accuracy has been achieved.

When Benjamin Franklin invented the lightning-rod, the clergy, both in England and America, with enthusiastic support of George III, condemned it as an impious attempt to defeat the will of God.

What men really want is not knowledge but certainty.