Genes are biochemical recipes written in a four-letter alphabet called DNA.

Every minute, every second, the pattern of genes being expressed in your brain changes, often in direct or indirect response to events outside the body. Genes are the mechanisms of experience.

The fuel on which science runs is ignorance. Science is like a hungry furnace that must be fed logs from the forests of ignorance that surround us. In the process, the clearing we call knowledge expands, but the more it expands, the longer its perimeter and the more ignorance comes into view.

A cumulative change of less than 2°C by the end of this century will do no net harm. It will actually do net good [...] rainfall will increase slightly, growing seasons will lengthen, Greenland's ice cap will melt only very slowly, and so on.

Considering the way evolution works, it should not be surprising if every man has got a Don Giovanni somewhere inside him.

A true scientist is bored by knowledge; it is the assault on ignorance that motivates him - the mysteries that previous discoveries have revealed.

This idea holds out hope that the human race will prosper mightily in the years ahead-because ideas are having sex with each other as never before.