Nothing which consists of corporeal matter is absolutely light, but that is comparatively lighter which is rarer, either by its own nature, or by accidental heat. And it is not to be thought that light bodies are escaping to the… — Johannes Kepler Copy Share Image
If the moon and earth were not retained in their orbits by their animal force or some other equivalent, the earth would mount to… — Johannes Kepler Copy Share
If God himself has waited six thousand years for someone to contemplate his works, my book can wait for a hundred. — Johannes Kepler Copy Share
...Those laws are within the grasp of the human mind. God wanted us to recognize them by creating us after his own image so… — Johannes Kepler Copy Share
Just as the eye was made to see colours, and the ear to hear sounds, so the human mind was made to understand, not… — Johannes Kepler Copy Share
I had the intention of becoming a theologian...but now I see how God is, by my endeavors, also glorified in astronomy, for 'the heavens… — Johannes Kepler Copy Share
[Quantity is the fundamental feature of things,] the 'primarium accidens substantiae,' ...prior to the other categories. — Johannes Kepler Copy Share
Repudiating the sensible world, which he neither sees himself nor believes from those who have, the Peripatetic joins combat by childish quibbling in a… — Johannes Kepler Copy Share
If the earth were not round, heavy bodies would not tend from every side in a straight line towards the center of the earth,… — Johannes Kepler Copy Share
Wherever there are qualities there are likewise quantities, but not always vice versa. — Johannes Kepler Copy Share
The soul of the newly born baby is marked for life by the pattern of the stars at the moment it comes into the… — Johannes Kepler Copy Share
So, Fabricius, I already have this: that the most true path of the planet [Mars] is an ellipse, which Dürer also calls an oval,… — Johannes Kepler Copy Share
Ships and sails proper for the heavenly air should be fashioned. Then there will also be people, who do not shrink from the dreary… — Johannes Kepler Copy Share
Gravity is a mutual affection between cognate bodies towards union or conjunction (similar in kind to the magnetic virtue), so that the earth attracts… — Johannes Kepler Copy Share
