As soon as we abandon our own reason, and are content to rely upon authority, there is no end to our troubles.

Organic life, we are told, has developed gradually from the protozoon to the philosopher, and this development, we are assured, is indubitably an advance. Unfortunately it is the philosopher, not the protozoon, who gives us this assurance.

One of the chief triumphs of modern mathematics consists in having discovered what mathematics really is.

Love is a little haven of refuge from the world.

The really useful education is that which follows the direction of the child's own instinctive interests, supplying knowledge for which it is seeking, not dry, detailed information wholly out of relation to its spontaneous desires.

Most people believe in God because they have been taught from early infancy to do it, and that is the main reason. Then I think that the next most powerful reason is the wish for safety.

None but a coward dares to boast that he has never known fear.