“ Geometry has two great treasures;

one is the Theorem of Pythagoras;

the other, the division of a line

into extreme and mean ratio.

The first

we may compare to a measure of gold;

the second

we may name a precious jewel.

”
“ The chief aim of all investigations

of the external world should be

to discover

the rational order and harmony

which has been imposed on it by God

and which He revealed to us

in the language of mathematics.

”