Knowledge is knowing... or knowing where to find out.

Profits, like sausages... are esteemed most by those who know least about what goes into them.

One of the definitions of sanity is the ability to tell real from unreal. Soon we'll need a new definition.

If we do not learn from history, we shall be compelled to relive it. True. But if we do not change the future, we shall be compelled to endure it. And that could be worse.

Man has a limited biological capacity for change. When this capacity is overwhelmed, the capacity is in future shock.

The responsibility for change...lies within us. We must begin with ourselves, teaching ourselves not to close our minds prematurely to the novel, the surprising, the seemingly radical.

You can use all the quantitative data you can get, but you still have to distrust it and use your own intelligence and judgment.