Only professional mathematicians learn anything from proofs. Other people learn from explanations.

Somebody came up to me after a talk I had given, and say, "You make mathematics seem like fun." I was inspired to reply, "If it isn't fun, why do it?"

Often the heart can see what the eyes cannot.

My favorite thing about motherhood is the outpouring of love that is non-judgmental and beautiful. My daughter just makes me happy, and she motivates me to be a kid again.

Love you will find only where you may show yourself weak without provoking strength.

This union may never be perfect, but generation after generation has shown that it can always be perfected.

Oddly enough, I find the best hostages are the live ones. - Karl

Show me a woman content with her figure and I'll show you a seven-year-old girl. Everybody else is engaged in the war against flab.

When I retired, I felt that I lived more in that year than I had the previous 27 years of my life.

We come to love not by finding the perfect person, but by learning to see an imperfect person perfectly.

It's a tough life if you don't weaken.

In the enfranchised mind of the scientific naturalist, the usual feelings of repugnance simply do not exist. Curiosity conquers prejudice.