Peter B. Medawar Quotes

The human mind treats a new idea the way the body treats a strange protein. It rejects it.

It is a profound truth that nature does not know best; that genetical evolution is a tale of waste, makeshift, compromise, and blunder.

People who brandish naturalistic principles at us are usually up to mischief.

I once spoke to a human geneticist who declared that the notion of intel- ligence was quite meaningless, so I tried calling him unintelligent. He was annoyed, and it did not appease him when I went on to ask how he came to attach such a clear meaning to the notion of lack of intelligence. […]

Most illnesses tend to kill some people and to spare others, “and if you are one of the lucky ones and have also had at hand a steady knowledgeable doctor, you become convinced that the doctor saved you.” (The quote is from Lewis Thomas.) It is just this element of post hoc, propter hoc, I […]

The human mind treats a new idea the same way the body treats a strange protein; it rejects it.