"There was this huge world out there, independent of us human beings and standing before us like a great, eternal riddle, at least partly accessible to our inspection and thought. The contemplation of that world beckoned like a liberation."

  Albert Einstein

The opposite of a correct statement is a false statement. But the
  opposite of a profound truth may well be another profound truth.

Niels Bohr

Newton, forgive me," wrote Einstein; "you found the only way which in your age was just barely possible for a man with the highest powers of thought and creativity. The concepts which you created are guiding our thinking in physics even today..."

Sir Isaac Newton

The outside world is something independent from man, something absolute, and the quest for the laws which apply to this absolute appeared to me as the most sublime scientific pursuit in life.

Max Planck