The conversation drifted back and forth from profundities about the nature of God, the universe and man, to lighter questions.

Suddenly, Einstein lifted his head, looked up at the skies and said, “We know nothing about it at all. Our knowledge is but the knowledge of school children.”

“Do you think that we shall ever probe the secret?” “Possibly, we shall know a little more than we do now. But the real nature of things –that we shall never know, never.”