The builder of the best racing car is not necessarily its best driver.

Indeed, not all attacks-especially the bitter and ridiculing kind leveled at Darwin-are offered in good faith, but for practical purposes it is good policy to assume that they are.

The true scientist never loses the faculty of amazement.

The element of chance in basic research is overrated. Chance is a lady who smiles only upon those few who know how to make her smile.

Leaders are leaders only as long as they have the respect and loyalty of their followers.

I doubt that Fleming could have obtained a grant for the discovery of penicillin on that basis [a requirement for highly detailed research plans] because he could not have said, 'I propose to have an accident in a culture so that it will be spoiled by a mould falling on it, and I propose to recognize the possibility of extracting an antibiotic from this mould.'

Its not stress that kills us, it is our reaction to it.