Wisdom: It's something that you know when you see it. You can recognize it, you can experience it. I have defined wisdom as the capacity to make judgments that when looked back upon will seem to have been wise.

I think of the need for more wisdom in the world, to deal with the knowledge that we have. At one time we had wisdom, but little knowledge. Now we have a great deal of knowledge, but do we have enough wisdom to deal with that knowledge?

What is ... important is that we - number one: Learn to live with each other. Number two: try to bring out the best in each other.

What people think of as the moment of discovery is really the discovery of the question.

Charlotte's Web Life is magic, the way nature works seems to be quite magical.

Reply when questioned on the safety of the polio vaccine he developed: It is safe, and you can't get safer than safe.

When you inoculate children with a polio vaccine, you don't sleep well for two or three months.