Carl Sagan Dna Quotations

There are as many atoms in one molecule of DNA as there are stars in a typical galaxy.

The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.

Some racists still reject the plain testimony written in the DNA that all the races are not only human but nearly indistinguishable. . . .

There are more potential combinations of DNA [physical forms] than there are atoms in the universe.