Life is not found in atoms or molecules or genes as such, but in organization; not in symbiosis but in synthesis.

Heredity is to-day the central problem of biology. This problem may be approached from many sides - that of the breeder, the experimenter, the statistician, the physiologist, the embryologist, the cytologist - but the mechanism of heredity can be studied best by the investigation of the germ cells and their development.

Freedom is one of the principal goals of human endeavor, but the best use man can make of his freedom is to place limitations upon it.

Life is not found in atoms or molecules or genes as such, but in organization; not in symbiosis but in synthesis.