To a request to explain what an electron is really supposed to be we can only answer, 'It is part of the A B C of physics.'

The most insignificant present has over the most significant past the advantage of reality.

Scientists were rated as great heretics by the church, but they were truly religious men because of their faith in the orderliness of the universe.

There is nothing new under the sun but there are lots of old things we don't know.

The portions of the external universe of which we have additional knowledge by direct awareness amount to a very small fraction of the whole; of the rest we know only the structure and not what it is a structure of. Science is concerned with the rational correlation of experience rather than a discovery of fragments of absolute truth about an external world.

Untaught by long experience we stretch a hand to grasp the shadow, instead of accepting its shadowy nature.

The real problem is not whether machines think but whether men do.

The intuitive mind is a sacred gift and the rational mind is a faithful servant. We have created a society that honors the servant and has forgotten the gift.

Believe those who are seeking the truth; doubt those who find it.

Science is one thing, wisdom is another. Science is an edged tool, with which men play like children, and cut their own fingers.