There's no question dolphins are smarter than humans as they play more.

Whether or not you can observe a thing depends upon the theory you use. It is the theory which decides what can be observed.

It is just as important to make knowledge live and keep it alive as to solve specific problems.

Most people say that it is the intellect which makes a great scientist. They are wrong: it is character.

Given the millions of billions of Earth-like planets, life elsewhere in the Universe without a doubt, does exist. In the vastness of the Universe we are not alone.

A clever person solves a problem. A wise person avoids it.

I do not believe in a personal God and I have never denied this but have expressed it clearly.