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Only human beings guide their behaviour by a knowledge of what happened before they were born and a preconception of what may happen after they are dead; thus only humans find their way by a light that illuminates more than the patch of ground they stand on.

— Peter Medawar

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More quotes by Peter Medawar

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

No virus is known to do good: it has been well said that a virus is "a piece of bad news wrapped up in protein."

A scientist is no more a collector and classifier of facts than a historian is a man who complies and classifies a chronology of the dates of great battles and major discoveries.

If politics is the art of the possible, research is surely the art of the soluble. Both are immensely practical-minded affairs.

Karl Popper’s conception of the scientific process is that is realistic – it gives a pretty fair picture of what goes on in real life laboratories.

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Attribution

Quote text and notes from Wikiquote: Peter Medawar (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.