Those words were written by Albert Einstein (1879-1955). After doing a little research, I found the following words which he said to a rabbi in 1929:
After thinking about these two quotes and considering the author, I guess I would conclude that Einstein, who saw and understood the tiniest particles to the largest galaxies, was awed by the majesty and intricacies of our universe just like the rest of us. Even his vast knowledge could not fully explain the mysteries, but he clearly believed the mysteries did not include a judging, vengeful God. The majesty and complexity of our world could be summed up in the simplest of words: miracle.