In microbiology the roles of mutation and selection in evolution are coming to be better understood through the use of bacterial cultures of mutant strains. ↗
When you're wounded and left on Afghanistan's plains, and the women come out to cut up what remains, jest roll to your rifle and blow out your brains and go to your gawd like a soldier. ↗
A little and a little, collected together, becomes a great deal; the heap in the barn consists of single grains, and drop and drop make the inundation. ↗