The prediction I can make with the highest confidence is that the most amazing discoveries will be the ones we are not today wise enough to foresee.

If we ruin the earth, there is no place else to go

Science cuts two ways, of course; its products can be used for both good and evil. But there's no turning back from science. The early warnings about technological dangers also come from science.

Humans - who enslave, castrate, experiment on, and fillet other animals - have had an understandable penchant for pretending animals do not feel pain.

When permitted to listen to alternative opinions and engage in substantive debate, people have been known to change their minds. It can happen.

The total number of stars in the Universe is larger than all the grains of sand on all the beaches of the planet Earth.

Each of us is a tiny being, permitted to ride on the outermost skin of one of the smaller planets for a few dozen trips around the local star.