In all affairs it's a healthy thing now and then to hang a question mark on the things you have long taken for granted.
O, it is excellent to have a giant's strength; but it is tyrannous to use it like a giant.
Shake off all the fears of servile prejudices, under which weak minds are servilely crouched. Fix reason firmly in her seat, and call on her tribunal for every fact, every opinion. 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 blindfolded fear.
Time is on the side of the oppressed today, it's against the oppressor. Truth is on the side of the oppressed today, it's against the oppressor. You don't need anything else.
Forget injuries, never forget kindnesses.
Nothing inspires forgiveness quite like revenge.
Always be nice to those younger than you, because they are the ones who will be writing about you.