If there is a God, there should be no slaves.

The combined wisdom and genius of all mankind cannot possibly conceive of an argument against liberty of thought.

The history of intellectual progress is written in the lives of infidels.

My objection to Christianity is that it is infinitely cruel, infinitely selfish, and, I might add, infinitely absurd.

There is the same difference between talent and genius that there is between a stone mason and a sculptor

It has always seemed to me that a being coming from another world, with a message of infinite importance to mankind, should at least have verified that message by his own signature. Is it not wonderful that not one word was written by Christ?

Every child should be taught that useful work is worship and that intelligent labor is the highest form of prayer.