Ab-Soul Quotes

If we consider him [Euclid] as meaning to be what his commentators have taken him to be, a model of the most unscrupulous formal rigour, we can deny that he has altogether succeeded, though we admit that he made the nearest approach.

Ancient Greek mathematics

That, if a straight line falling on two straight lines make the interior angles on the same side less than two right angles, the two straight lines, if produced indefinitely, meet on that side on which are the angles less than the two right angles.

History of mathematics

It is a remarkable fact in the history of geometry, that the Elements of Euclid, written two thousand years ago, are still regarded by many as the best introduction to the mathematical sciences.

Kepler followed Proclus and believed that 'the main goal of Euclid was to build a geometric theory of the so-called s.

The property of similar triangles, and that contained in Prop. 47, Book I [the ], are most important theorems in Geometry.