It is a very, very dangerous and lethal virus in human beings.

Human beings are a wonderful virus in some ways.

Religion is dangerous because it allows human beings who don't have all the answers to think that they do.

If a little knowledge was a dangerous thing, a lot was lethal.

In the long-term it is a very dangerous virus. The end result is that the blossoming doesn't go well and you don't have any crop.

When it comes to the pinch, human beings are heroic.