Optimism is the foundation of courage.

The fifth freedom, the Freedom of Individual Enterprise, is the keystone of the arch on which the other Four Freedoms rest. This is what freedom means.

Every attempt, by whatever authority, to fix a maximum of productive labor by a given worker in a given time is an unjust restriction upon his freedom and a limitation of his right to make the most of himself in order that he may rise in the scale of the social and economic order in which he lives. The notion that all human beings born into this world enter at birth into a definite social and economic classification, in which classification they must remain permanently through life, is wholly false and fatal to a progressive civilization.

Optimism is essential to achievement and it is also the foundation of courage and true progress.

Optimism is the foundation of courage.

To exclude religious teaching altogether from education... is a very dangerous and curious tendency. The result is to give paganism a new importance and influence.

Modern mathematics, that most astounding of intellectual creations, has projected the mind's eye through infinite time and the mind's hand into boundless space.