The reading of all good books is like a conversation with the finest minds of past centuries.

Divide each difficulty into as many parts as is feasible and necessary to resolve it.

Common sense is the most fairly distributed thing in the world, for each one thinks he is so well-endowed with it that even those who are hardest to satisfy in all other matters are not in the habit of desiring more of it than they already have.

Nothing is more fairly distributed than common sense: no one thinks he needs more of it than he already has.

Much of my work in biology has been driven by my early training in chemistry. When studying a new chemical compound, the first and most important thing is to determine its detailed molecular structure.

It is my belief that no matter how advanced man may become in science, technology, systems, and knowledge, he can never improve on the foundational precepts of marriage as the bedrock of social development.

I think Douglas was a real one-off. He was so clever and so intelligent and so well read in real science that he could make science fiction work as well as it did. And just such fun to have around, he was just such a lovely man.

You must learn to talk clearly. The jargon of scientific terminology which rolls off your tongues is mental garbage.