The common idea that scientists reject a theory as soon as it leads to a contradiction is just not so. When they get something that works at all they plunge ahead with it and ignore its weak spots... scientists are just as bad as the rest of the public in following fads and being influenced by mass enthusiasm.

I say, technically, I don't think anyone in the world knows how to do such a thing. and I feel confident it will not be done for a very long period to come. I think we can leave that out of our thinking. I wish the American public would leave that out of their thinking.

Fear cannot be banished, but it can be calm and without panic; it can be mitigated by reason and evaluation.

A belief may be larger than a fact. A faith that is overdefined is the very faith most likely to prove inadequate to the great moments of life.

The camera hound of the future wears on his forehead a lump a little larger than a walnut.

If scientific reasoning were limited to the logical processes of arithmetic, we should not get very far in our understanding of the physical world

Basic scientific research is scientific capital.