Wisdom is what's left after we've run out of personal opinions

I speak with dogs frequently. They don't really talk, but I feel they're communicating.

The natural world is a package deal; you don't get to select which facts you like and which you don't.

The more you find out about the world, the more opportunities there are to laugh at it.

Science is the best thing humans beings have ever come up with. And if it isn't, science will fix it.

There's nothing I believe in more strongly than getting young people interested in science and engineering, for a better tomorrow, for all humankind.

Science is the best idea humans have ever had. The more people who embrace that idea, the better.

To leave the world better than you found it, sometimes you have to pick up other people's trash.

Everyone you will ever meet knows something you don't.

Worry compounds the futility of being trapped on a dead-end street. Thinking opens new avenues.

Failure can be bought on easy terms; success must be paid for in advance

Only the poor can know all the disadvantages of poverty. Only the rich can know all the disadvantages of wealth.

The mistakes made by Congress wouldn't be so bad if the next Congress didn't keep trying to correct them.

Our ego is our silent partner...too often with a controlling interest.

Our freedom to discipline ourselves is a freedom we can lose if we don't use it.

Saying what we think gives us a wider conversational range than saying what we know.

Of all creatures on earth, we humans have the highest level of stupidity.

The true measure of your worth includes all the benefits others have gained from your success.

If we fixed a hangnail the way our government fixes the economy, we'd slam a car door on it.