Francis Crick

Once information has passed into protein it cannot get out again.

The genetic code is degenerate.

The genetic code is read in triplets.

The genetic code is universal.

A man's ideas are not (as is sometimes imagined) a set of neatly ordered propositions, but a vast collection of hunches, prejudices, and half-baked notions.

If you want to get ahead in science, you have to be prepared to be wrong a lot.

The most important thing in science is not to get ahead, but to get it right.

The best way to understand a complex system is to try to build it.

The brain is a machine, and the mind is what the machine does.

There is no scientific evidence for the existence of a soul.

The aim of science is to make the world intelligible.

The structure of DNA is a double helix.

The two strands of DNA are antiparallel.

The bases in DNA are paired A with T and G with C.

The sequence of bases in DNA carries the genetic information.

The genetic code is non-overlapping.

The genetic code is comma-less.

The genetic code is unambiguous.

The genetic code is read from a fixed starting point.

The genetic code is essentially the same in all organisms.