Repudiating the sensible world, which he neither sees himself nor believes from those who have, the Peripatetic joins combat by childish quibbling in a world on paper, and denies the Sun shines because he himself is blind.
Interpretation
This quote criticizes those who reject reality due to their personal limitations.
In this quote, Johannes Kepler highlights the folly of dismissing the objective truths of the world based on one's inability to perceive them. He uses the metaphor of blindness to illustrate how an individual's limitations can lead them to deny the existence of evident realities, revealing the absurdity of arguing against what is universally acknowledged simply because of personal inability to experience or understand it.
In practice
This quote can be used in a philosophical discussion about subjective versus objective reality.
...Those laws are within the grasp of the human mind. God wanted us to recognize them by creating us after his own image so that we could share in his own thoughts... and if piety allow us to say so, our understanding is in this respect of the same kind as the divine, at least as far as we are able to grasp something of it in our mortal life.
A most unfailing experience... of the excitement of sublunary (that is, human) natures by the conjunctions and aspects of the planets has instructed and compelled my unwilling belief.
We find, therefore, under this orderly arrangement, a wonderful symmetry in the universe, and a definite relation of harmony in the motion and magnitude of the orbs, of a kind that is not possible to obtain in any other way.
I am stealing the golden vessels of the Egyptians to build a tabernacle to my God from them, far far away from the boundaries of Egypt. If you forgive me, I shall rejoice; if you are enraged with me, I shall bear it. See, I cast the die, and I write the book. Whether it is to be read by the people of the present or of the future makes no difference: let it await its reader for a hundred years, if God himself has stood ready for six thousand years for one to study him.
Eyesight should learn from reason.
I measured the skies, now the shadows I measure, Sky-bound was the mind, earth-bound the body rests. [Kepler's epitaph]
A fanatic commits to an ideal to whatever end. A fanatic throws everything aside to pursue their idea. Take something which it would be good to be committed to, like basic human rights. You might campaign for such a thing. You might spend every day of your life pursuing such a thing. But once you become fanatical about it, anything can happen.
We would labor earnestly to raise a believer in salvation by free will into a believer in salvation by grace, for we long to see all religious teaching built upon the solid rock of truth and not upon the sand of imagination. At the same time, our grand object is not the revision of opinions, but the regeneration of natures. We should bring men to Christ, not to our own particular views of Christianity.
Do we, holding that the gods exist, deceive ourselves with insubstantial dreams and lies, while random careless chance and change alone control the world?
Personal’s not the same as important. People just think it is.
A vision should be judged by the clarity of its values, not the clarity of its implementation path [in Mediated Modeling page 43]
What is characteristic of illusions is that they are derived from human wishes.
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