The highest court is in the end one’s own conscience and conviction—that goes for you and for Einstein and every other physicist—and before any science there is first of all belief.

Much later, when I discussed the problem with Einstein, he remarked that the introduction of the cosmological term was the biggest blunder he ever made in his life. But this 'blunder,' rejected by Einstein, is still sometimes used by cosmologists even today, and the cosmological constant denoted by the Greek letter Λ rears its ugly head again and again and again.

If it were Hegel, I might suspect it means nothing. But Goethe means something, always.