There's nothing more dangerous than someone who wants to make the world a better place.

A desk is a dangerous place from which to view the world.

A closet full of wire hangers can be the most dangerous place in the world.

Africa is a very dangerous place.

The world is a dangerous place, not because of those who do evil, but because of those who look on and do nothing.

The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it.