The Thoroughbred exists because its selection has depended, not on experts, technicians, or zoologists, but on a piece of wood: the winning post of the Epsom Derby. If you base your criteria on anything else, you will get something else, not the Thoroughbred.

Success breeds complacency. Complacency breeds failure. Only the paranoid survive.

Inspiration leads to invention. Tenacity is the breeding ground for inspiration. There can be no invention in the absence of tenacity.

By nature servile, people attempt at first glance to find signs of good breeding in the appearance of those who occupy more exalted stations.

Characteristics of a popular politician: a horrible voice, bad breeding, and a vulgar manner.

Eugenics, which had started long before my time, had once been defined as including free love and prevention of conception… Recently it had cropped up again in the form of selective breeding.