Power tends to corrupt, and absolute power corrupts absolutely.
Absolute power demoralizes.
Great men are almost always bad men.
A wise person does at once, what a fool does at last. Both do the same thing; only at different times.
In every age its (liberty's) progress has been beset by its natural enemies, by ignorance and superstition, by lust of conquest and by love of ease, by the strong man's craving for power, and the poor man's craving for food
There are two things which cannot be attacked in front: ignorance and narrow-mindedness. They can only be shaken by the simple development of the contrary qualities. They will not bear discussion.