The whole point of science is that most of it is uncertain. That's why science is exciting--because we don't know. Science is all about things we don… - Freeman Dyson

once information has passed into protein it cannot get out again. . . . the transfer of information from nucleic acid to nucleic acid or from nucleic acid to protein may be possible, but transfer from protein to protein, or from protein to nucleic acid is impossible.

I have to clear away a few popular misconceptions about space as a habitat … It is generally considered that planets are important. Except for Earth, they are not. Mars is waterless, and the others are, for various reasons, basically inhospitable to man. It is generally considered that beyond the sun’s family of planets there is absolute emptiness extending for light-years until you come to another star. In fact, it is likely that the space around the solar system is populated by huge numbers of comets, small worlds a few miles in diameter, rich in water and the other chemicals essential to life.

They had found a creative middle way, between the hierarchical world of big business and the utopian dreams of ffudent rebellion.