Old men are dangerous it doesn't matter to them what is going to happen to the world
It shows how dangerous it is to be too good
There is no subject on which more dangerous nonsense is talked and thought than marriage.
There is nothing more dangerous than the conscience of a bigot.
A little learning is a dangerous thing, but we must take that risk because a little is as much as our biggest heads can hold.
It is not disbelief that is dangerous to our society; it is belief.