I don’t know whether God exists or not. … Some forms of atheism are arrogant and ignorant and should be rejected, but agnosticism—to admit that we don’t know and to search—is all right. … When I look at what I call the gift of life, I feel a gratitude which is in tune with some religious ideas of God. However, the moment I even speak of it, I am embarrassed that I may do something wrong to God in talking about God.