Genius is one percent inspiration, ninety-nine percent perspiration.

Maturity is often more absurd than youth and very frequently is most unjust to youth.

Being busy does not always mean real work. The object of all work is production or accomplishment and to either of these ends there must be forethought, system, planning, intelligence, and honest purpose, as well as perspiration. Seeming to do is not doing.

I know this world is ruled by infinite intelligence. Everything that surrounds us- everything that exists - proves that there are infinite laws behind it. There can be no denying this fact. It is mathematical in its precision.

When I was in college at Carnegie Mellon, I wanted to be a chemist. So I became one. I worked in a laboratory and went to graduate school at the University of Pittsburgh. Then I taught science at a private girls' school. I had three children and waited until all three were in school before I started writing.

Synergy and serendipity often play a big part in medical and scientific advances.

Death will never be pretty - its sights and smells too close and crude. And it will never come under our control: it gallops where we tiptoe, rips up our routines, burns our very breath with its heat and sting.

People always say things like, Oh, well, he was suffering so much that he was better off dying. But that's not true. You're always better off living.