"Metrical geometry is thus a part of descriptive geometry, and descriptive geometry is all geometry."

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To me, however, the question of the times resolved itself into a practical question of the conduct of life. How shall I live? We are incompetent to solve the times. Our geometry cannot span the huge orbits of the prevailing ideas, behold their return, and reconcile their opposition. We can only obey our own polarity.

— Ralph Waldo Emerson