It is the underlying principle of religion as well as all serious endeavour in art and science. He who never had this experience seems to me, if not dead, then at least blind. To sense that behind anything that can be experienced there is a something that our mind cannot grasp and whose beauty and sublimity reaches us only indirectly and as a feeble reflection, this is religiousness. In this sense I am religious. I do not believe in a personal God and I have never denied this but have expressed it clearly.
Imagination is more important than knowledge.
Knowledge is limited. It is determined for the insect as well as for the star. Human beings, vegetables, or cosmic dust, we all dance to a mysterious tune, intoned in the distance by an invisible piper. To the Master's honor all must turn, each in its track, without a sound, forever tracing Newton's ground. When the solution is simple God is answering.