Angle Quote by Lewis Carroll

I am coming more and more to the conviction that the necessity of our geometry cannot be demonstrated, at least neither by, nor for,…

— Carl Friedrich Gauss

Let no-one ignorant of geometry enter. Said to have been inscribed above the door of Plato's Academy.

— Plato

It would not be impossible to prove with sufficient repetition and a psychological understanding of the people concerned that a square is in fact…

— Joseph Goebbels

The object of geometry in all its measuring and computing, is to ascertain with exactness the plan of the great Geometer, to penetrate the…

— Benjamin Peirce

“There is no geometry here; or rather there is a secret, infinitely non-Eucledian and subtle geometry, a secret harmony that the mind seizes before…

— Alan Macfarlane

The centre of gravity of any parallelogram lies on the straight line joining the middle points of opposite sides.

— Archimedes

As the geometer intently seeks to square the circle, but he cannot reach, through thought on thought, the principle he needs, so I searched…

— Dante Alighieri

[On Archimedes mathematical results:] It is not possible to find in all geometry more difficult and intricate questions, or more simple and lucid explanation...…

— Proclus

Considerable obstacles generally present themselves to the beginner, in studying the elements of Solid Geometry, from the practice which has hitherto uniformly prevailed in…

— Augustus De Morgan

Geometry is the rules of all mental investigation

— Mikhail Lomonosov

“But if some mind very different from ours were to look upon some property of some curved line as we do on the evenness…

— Roger Joseph Boscovich

Geometry is the art of correct reasoning from incorrectly drawn figures.

— Henri Poincare