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As soon as somebody demonstrates the art of flying, settlers from our species of man will not be lacking on the moon and Jupiter... Given ships or sails adapted to the breezes of heaven, there will be those who will not shrink from even that vast expanse.
Johannes Kepler -
He who will please the crowd and for the sake of the most ephemeral renown will either proclaim those things which nature does not display or even will publish genuine miracles of nature without regard to deeper causes is a spiritually corrupt person... With the best of intentions I publicly speak to the crowd (which is eager for things new) on the subject of what is to come.
Johannes Kepler
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Just as the eye was made to see colours, and the ear to hear sounds, so the human mind was made to understand, not whatever you please, but quantity.
Johannes Kepler -
[God] is the kind Creator who brought forth nature out of nothing.
Johannes Kepler -
Either... the moving intelligences of the planets are weakest in those that are farthest from the sun, or... there is one moving intelligence in the sun, the common center, forcing them all round, but those most violently which are nearest, and that it languishes in some sort and grows weaker at the most distant, because of the remoteness and the attenuation of the virtue.
Johannes Kepler -
The sphere of the attractive virtue which is in the moon extends as far as the earth, and entices up the waters; but as the moon flies rapidly across the zenith, and the waters cannot follow so quickly, a flow of the ocean is occasioned in the torrid zone towards the westward.
Johannes Kepler -
Once miracles are admitted, every scientific explanation is out of the question.
Johannes Kepler -
...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.
Johannes Kepler
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In theology we must consider the predominance of authority; in philosophy the predominance of reason.
Johannes Kepler -
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.
Johannes Kepler -
Geometry is one and eternal shining in the mind of God. That share in it accorded to humans is one of the reasons that humanity is the image of God.
Johannes Kepler -
If the earth were not round, heavy bodies would not tend from every side in a straight line towards the center of the earth, but to different points from different sides.
Johannes Kepler -
Gravity is a mutual affection between cognate bodies towards union or conjunction (similar in kind to the magnetic virtue), so that the earth attracts a stone much rather than the stone seeks the earth.
Johannes Kepler -
Nature loves simplicity and unity.
Johannes Kepler
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My greatest desire is that I may perceive the God whom I find everywhere in the external world, in like manner also within and inside myself.
Johannes Kepler -
The squares of the periodic times are to each other as the cubes of the mean distances.
Johannes Kepler -
Temporis filia veritas; cui me obstetricari non pudet.
Johannes Kepler -
O telescope, instrument of much knowledge, more precious than any sceptre!
Johannes Kepler -
Do we ask what profit the little bird hopes for in singing?
Johannes Kepler -
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.
Johannes Kepler
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...wheresoever the earth may be placed, or whithersoever it may be carried by its animal faculty, heavy bodies will always be carried towards it.
Johannes Kepler -
So long as the mother, Ignorance, lives, it is not safe for Science the offspring, to divulge the hidden causes of things.
Johannes Kepler -
It may be well to wait a century for a reader, as God has waited six thousand years for an observer.
Johannes Kepler -
The Creator, the fountain of all wisdom, the approver of perpetual order, the eternal and superessential spring of geometry and harmonics.
Johannes Kepler