The diversity of the phenomena of nature is so great, and the treasures hidden in the heavens so rich, precisely in order that the human mind shall never be lacking in fresh nourishment.

Geometry is the archetype of the beauty of the world.

Geometry, which before the origin of things was coeternal with the divine mind and is God himself (for what could there be in God which would not be God himself?), supplied God with patterns for the creation of the world, and passed over to Man along with the image of God; and was not in fact taken in through the eyes.

I believe the geometric proportion served the creator as an idea when He introduced the continuous generation of similar objects from similar objects.

There will certainly be no lack of human pioneers when we have mastered the art of flight....Let us create vessels and sails justed to the heavenly ether, and there will be plenty of people unafraid of the empty wastes. In the meantime we shall prepare, for the brave sky-travelers, maps of the celestial bodies.

It may be well to wait a century for a reader, as God has waited six thousand years for an observer.

Astronomy would not provide me with bread if men did not entertain hopes of reading the future in the heavens.