Thomas Jefferson on religion

The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.

I tremble for my country when I reflect that God is just, that His justice cannot sleep forever.

Question with boldness even the existence of a God; because, if there be one, he must more approve of the homage of reason, than that of blind-folded fear.

The Bible is not my book, and Christianity is not my religion. I could never give assent to the long, complicated statements of Christian dogma.

Abraham Lincoln1809–1865

• Christianity

A man’s ethical behavior should be based effectually on sympathy, education, and social ties; no religious basis is necessary. Man would indeed be in a poor way if he had to be restrained by fear of punishment and hope of reward after death.

Albert Einstein1879–1955Religion and Science (1930)

• Morality

The most ridiculous concept ever perpetrated by Homo Sapiens is that the Lord God of Creation, Shaper and Ruler of the Universes, wants the sacharrine adoration of his creations, that he can be persuaded by their prayers, and becomes petulant if he does not recieve this flattery. Yet this ridiculous notion, without one real shred of evidence to bolster it, has gone on to found one of the oldest, largest and least productive industries in history.

Robert A. Heinlein1907–1988

• Prayer