Quote by Max Planck
"It is impossible to distinguish between what is real and what appears real when both produce identical results."
More from Max Planck
"Science cannot solve the ultimate mystery of nature. And that is because, in the last analysis, we ourselves are a part of the mystery that we are trying to solve."
"All matter originates and exists only by virtue of a force which brings the particle of an atom to vibration."
"The inability to perceive that existence preceded creation is the primary barrier to understanding."
"Anybody who has been seriously engaged in scientific work of any kind realizes that over the entrance to the gates of the temple of science are written the words: 'You must have faith.'"