You cannot solve current problems with current thinking. Current problems are the result of current thinking.

For me a simple message, to think and act with courage, independence and imagination.

The satisfaction of physical needs is indeed the indispensable pre-condition of a satisfactory existence, but in itself it is not enough. In order to be content, men must also have the possibility of developing their intellectual and artistic powers to whatever extent accords with their personal characteristics and abilities.

I now see the necessity of a beginning.

Men marry women with the hope they will never change. Women marry men with the hope they will change. Invariably they are both disappointed.

At present every coachman and every waiter argues about whether or not the relativity theory is correct.

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.