Love, we say, is life; but love without hope and faith is agonizing death.

In the Life of Darwin by his son, there is related an incident of how the great naturalist once studied long as to just what a certain spore was. Finally he said, "It is this, for if it isn't, then what is it?" And all during his life he was never able to forget that he had been guilty of this unscientific attitude, for science is founded on certitude, not assumption.

Opportunities for education should be within the reach of every individual, not for the lucky few.

The love you liberate in your work is the love you keep.

The more one knows, the more one simplifies.

When you once attribute effects to the will of a personal God, you have let in a lot of little gods and evils - then sprites, fairies, dryads, naiads, witches, ghosts and goblins, for your imagination is reeling, riotous, drunk, afloat on the flotsam of superstition. What you know then doesn't count. You just believe, and the more your believe the more do you plume yourself that fear and faith are superior to science and seeing.

Old ways will always remain unless some one invents a new way and then lives and dies for it