The extreme socialists desire to run every nation as a single business concern.

I do not believe in the commercial possibility of induced radioactivity.

Religion is still parasitic in the interstices of our knowledge which have not yet been filled. Like bed-bugs in the cracks of walls and furniture, miracles lurk in the lacunae of science. The scientist plasters up these cracks in our knowledge; the more militant Rationalist swats the bugs in the open. Both have their proper sphere and they should realize that they are allies.

There can be no truce between science and religion.

While I do not suggest that humanity will ever be able to dispense with its martyrs, I cannot avoid the suspicion that with a little more thought and a little less belief their number may be substantially reduced.

I have never yet met a healthy person who worried very much about his health, or a really good person who worried much about his own soul.

I will give up my belief in evolution if someone finds a fossil rabbit in the Precambrian.