Paul Tillich Rule of Thumb

Doubt isn't the opposite of faith; it is an element of faith.

Yogi Berra Rule of Thumb

The future ain't what it used to be.

Jane Austen Rule of Thumb

Where so many hours have been spent in convincing myself that I am right, is there not some reason to fear I may be wrong?

Gary Hamet - C. K. Prahalad Rule of Thumb

The future is not what will happen ... the future is what is happening!

John Kenneth Galbraith Rule of Thumb

The only function of economic forecasting is to make astrology look respectable.

Warren Buffet Rule of Thumb

The rearview mirror is always clearer than the windshield!

John Naisbitt Rule of Thumb

The future is embedded in the present!

Benjamin Disraeli Rule of Thumb

What we anticipate seldom occurs...what we least expect usually happens.

Peter F. Drucker Rule of Thumb

The only thing we know about the future is that it is going to be different.

Kelly Andrews Rule of Thumb

The future is made in the present.

Alan Kay Rule of Thumb

The best way to predict the future is to invent it.

Dean Acheson Rule of Thumb

The future comes one day at a time.

James Reston Rule of Thumb

Postmortems on defeats are never very useful unless they say something about the future.

Niels Bohr Rule of Thumb

Forecasting is very difficult, especially if it's about the future.