But to measure cause and effect... you must ensure that a simple correlation, however tempting it may be, is not mistaken for a cause. In the 1990s the stork population of Germany increased and the German at-home birth rate rose as well. Shall we credit storks for airlifting the babies?

If factual information upsets you, then you are creating a world that is not embracing objective truths, and that's not how you advance a democracy.

Trillions of years into the future, when all stars are gone...all parts of the cosmos will cool to the same temperature as the ever-cooling background. At that time, space travel will no longer provide refuge because even Hell will have frozen over. We may then declare that the universe has died-not with a bang, but with a whimper.

The limits on your enlightenment come not from the age you stopped going to school but from the age you stopped being curious.

The tenacity of life is mind-boggling. We keep finding it where no one thought it could be.

When you are a hammer, all of your problems will look like nails to you.

God displayed a sense of humor when he configured the region between our legs an entertainment complex built around a sewage system.