"When no point of a line is at a finite distance, the line itself is at an infinite distance."

"He who shall wish to disentangle this proposition will easily be able to compose a volume."

"I freely confess that I never had taste for study or research either in physics or geometry except in so far as they …"

"Desargues the architect was doubtless influenced by what in his day was surrealism. In any event, he composed more li…"

"After his own fashion, Desargues discussed cross ratio; poles and polars; Kepler's principle (1604) of continuity, in…"

"Pascal made grateful acknowlegement to Desargues for his skill in projective geometry."

"Blaise Pascal... was one of the very few contemporaries who appreciated the worth of Desargues. He says in his Essais…"

"He gives the theory of involution of six points, but his definition of "involution" is not quite the same as the mode…"

"Desargues also gives the theory of polar lines. What is called "" in elementary works is as follows: If the vertices …"

"Parallel lines have a common end point at an infinite distance."