By the time I entered college, I had decided not to have children, a decision that was never regretted. Accordingly, I was careful to court only girls who wanted to have professional careers.

Few scientists acquainted with the chemistry of biological systems at the molecular level can avoid being inspired.

To retain my fascination with chemistry, I have had to change my research fields about every 10 years.

An investigator starts research in a new field with faith, a foggy idea, and a few wild experiments. Eventually the interplay of negative and positive results guides the work. By the time the research is completed, he or she knows how it should have been started and conducted.

We usually don't have applications in mind. They come later.

I have always felt that I understood a phenomenon only to the extent that I could visualise it. Much of the charm organic chemical research has for me derives from structural formulae. When reading chemical journals, I look for formulae first.

By the time I entered college, I had decided not to have children, a decision that was never regretted. Accordingly, I was careful to court only girls who wanted to have professional careers.