Just because you believe in something does not mean that it is true.
Information is not knowledge.
I have lived to prove Thoreau's contention that a man is rich in proportion to the number of things which he can afford to let alone.
Fear or stupidity has always been the basis of most human actions.
I owe as much of my success to an uncompromising obstinacy as to any original ideas.
The right to search for truth implies also a duty.