It is an eternal truth: it contains the mathematical demonstration of which man speaks, and the extent of its uses are unknown.
It may be said, that man can make or draw a triangle, and therefore a triangle is an human invention.
But the triangle, when drawn, is no other than the image of the principle: it is a delineation to the eye, and from thence to the mind, of a principle that would otherwise be imperceptible.

The triangle does not make the principle, any more than a candle taken into a room that was dark, makes the chairs and tables that before were invisible.

All the properties of a triangle exist independently of the figure, and existed before any triangle was drawn or thought of by man.

Man had no more to do in the formation of those properties or principles, than he had to do in making the laws by which the heavenly bodies move; and therefore the one must have the same divine origin as the other.
In the same manner as, it may be said, that man can make a triangle, so also, may it be said, he can make the mechanical instrument called a lever.

But the principle by which the lever acts, is a thing distinct from the instrument, and would exist if the instrument did not; it attaches itself to the instrument after it is made; the instrument, therefore, can act no otherwise than it does act; neither can all the efforts of human invention make it act otherwise.