Ideas won't keep. Something must be done about them.

Education should turn out the pupil with something he knows well and something he can do well.

Do not teach too many subjects and what you teach, teach thoroughly.

Life is the enjoyment of emotion, derived from the past and aimed at the future.

I have always noticed that deeply and truly religious persons are fond of a joke, and I am suspicious of those who aren't.

The task of a university is the creation of the future, so far as rational thought and civilized modes of appreciation can affect the issue.

We think of the number "five" as applying to appropriate groups of any entities whatsoever - to five fishes, five children, five apples, five days... We are merely thinking of those relationships between those two groups which are entirely independent of the individual essences of any of the members of either group. This is a very remarkable feat of abstraction; and it must have taken ages for the human race to rise to it