“Do not grow old, no matter how long you live. Never cease to stand like curious children before the Great Mystery into which we were born.”

“People like you and me never grow old. We never cease to stand like curious children before the great mystery into which we were born.”

“We never cease to stand like curious children before the great mystery into which we are born.”

“Out yonder there is this huge world, which exists independently of us human beings and which stands before us like a great, eternal riddle, at least partially accessible to our inspection and thinking”

“A photograph never grows old. You and I change, people change all through the months and years but a photograph always remains the same. How nice to look at a photograph of mother or father taken many years ago. You see them as you remember them. But as people live on, they change completely. That is why I think a photograph can be kind.”

“The pursuit of truth and beauty is a sphere of activity in which we are permitted to remain children all our lives.”

“The fairest thing we can experience is the mysterious. It is the fundamental emotion which stands at the cradle of true art and science. He who knows it not and can no longer wonder, no longer feel amazement, is as good as dead, a snuffed-out candle.”