The distinction between the past, present and future is only a stubbornly persistent illusion.

I have remained a simple fellow who asks nothing of the world; only my youth is gone - the enchanting youth that forever walks on air.

There's something to be said for relatives...it has to be said because it's unprintable!

One thing I have learned in a long life: that all our science, measured against reality, is primitive and childlike -- and yet it is the most precious thing we have.

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

The finest emotion of which we are capable is the mystic emotion.

Every age has its beautiful moments.