I myself, a professional mathematician, on re-reading my own work find it strains my mental powers to recall to mind from the figures the meanings of the demonstrations, meanings which I myself originally put into the figures and the text… — 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 Image
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 Image
...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 Image
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 Image
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 Image
[Quantity is the fundamental feature of things,] the 'primarium accidens substantiae,' ...prior to the other categories. — Johannes Kepler Copy Share Image
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 Image
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 Image
Wherever there are qualities there are likewise quantities, but not always vice versa. — Johannes Kepler Copy Share Image
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 Image
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 Image
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 Image
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 Image
![“[Quantity is the fundamental feature of things,] the 'primarium accidens substantiae,' ...prior to the other categories.” quote by Johannes Kepler](https://sms4smile.com/quotes/img-quotes/4a1/johannes-kepler-4278_categories_quantity-is-the-fundamental-feature-of-t_150994.jpg)
![“So, Fabricius, I already have this: that the most true path of the planet [Mars] is an ellipse, which Dürer also calls an oval, or certainly so close to an ellipse that the difference is insensible.” quote by Johannes Kepler](https://sms4smile.com/quotes/img-quotes/a6b/johannes-kepler-4278_differences_so-fabricius-i-already-have-this-that-th_311054.jpg)
