Wherever there is animal worship there is human sacrifice.

...this clumsy collision of two very impatient forms of ignorance was known as the quarrel of Science and Religion.

Look at that blacksmith, for instance,” went on Father Brown calmly; “a good man, but not a Christian — hard, imperious, unforgiving. Well, his Scotch religion was made up by men who prayed on hills and high crags, and learnt to look down on the world more than to look up at heaven. Humility is the mother of giants. One sees great things from the valley; only small things from the peak.

The truths of religion are unprovable; the facts of science are unproved.

In so far as religion is gone, reason is going. For they are both of the same primary and authoritative kind. They are both methods of proof which cannot themselves be proved.

Don't you believe people when they tell you that people sought for a sign, and believed in miracles because they were ignorant. They did it because they were wise, filthily, vilely wise—too wise to eat or sleep or put on their boots with patience.

In dealing with the arrogant asserter of doubt, it is not the right method to tell him to stop doubting. It is rather the right method to tell him to go on doubting , to doubt a little more, to doubt every day newer and wilder things in the universe, until at last, by some strange enlightenment, he may begin to doubt himself.

I never discuss anything else except politics and religion. There is nothing else to discuss.

Men are moved most by their religion; especially when it is irreligion.