For a long time the human instinct to understand was thwarted by facile religious explanations.

For we have never actually understood the revolutionary sense beneath them – the incredible truth that what religion calls the vision of God is found in giving up any belief in the idea of God.

Our intellects, no matter how sharp, can no more grasp this than they can comprehend God.

What is not yet known those blinded by faith can never learn.

On religion, many are destined to reason wrongly; others not to reason at all; and others to persecute those who do reason.

Faith can no more be described to a thoroughly rational mind than the idea of colors can be conveyed to a blind man.

I have seldom met an intelligent person whose views were not narrowed and distorted by religion.

People don't know what they are talking about when they say "religion".

Those who think religion is about belief don't understand religion, and don't understand belief.

Religion is the impotence of the human mind to deal with occurrences it cannot understand.

Those who think religion is about “belief” don’t understand religion, and don’t understand belief.

I learned long ago that when a thing defies rational explanation then it is because I lack a complete understanding of the facts.

I have hardly ever known a mathematician who was able to reason.

I have hardly ever known a mathematician who was capable of reasoning.