When you come to the end of all the light you know, and it's time to step into the darkness of the unknown, faith is knowing that one of two things shall happen: either you will be given something solid to stand on or you will be taught to fly.

Two paradoxes are better than one they may even suggest a solution.

Society's emissions of carbon dioxide may or may not turn out to have something significant to do with global warming-the jury is still out.

When Columbus took off, the purpose was to improve trade relations with China. That problem has not been solved to this very day, but just look at the by-products.

There is a time for scientists and movie stars and those who have flown the atlantic to restrain their opinions lest they be taken more seriously than they should be.

One may say that predictions are dangerous particularly for the future. If the danger involved in a prediction is not incurred, no consequence follows and the uncertainty principle is not violated.

The best weapon of a dictatorship is secrecy; the best weapon of a democracy is openness.