I learned English, my sixth language at this point, quite quickly.

From a chemist's point of view, the surface or interior of a star…is boring—there are no molecules there.

I am a teacher, and I am proud of it. At Cornell University I have taught primarily undergraduates, and indeed almost every year since 1966 have taught first-year general chemistry.

A few atoms added here, subtracted there, is all it takes to make the difference between male and female sex characteristics, between a harmless molecule and a deadly addictive one.

Not every collision, not every punctilious trajectory by which billiard-ball complexes arrive at their calculable meeting places lead to reaction. ... Men (and women) are not as different from molecules as they think.

Knowing without seeing is at the heart of chemistry.

I learned English, my sixth language at this point, quite quickly.