Eyesight should learn from reason.
Interpretation
This quote emphasizes the importance of using reason in our observation and understanding of the world.
Johannes Kepler asserts that our perception, represented by eyesight, should be guided by reason and rationality. This suggests that while we may observe the world around us visually, it is through logical thinking and reason that we can truly comprehend and learn from those observations.
In practice
In a philosophical debate about perception and 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.
I measured the skies, now the shadows I measure, Sky-bound was the mind, earth-bound the body rests. [Kepler's epitaph]
It may be well to wait a century for a reader, as God has waited six thousand years for an observer.
The real advantage which truth has, consists in this, that when an opinion is true, it may be extinguished once, twice, or many times, but in the course of ages there will generally be found persons to rediscover it
The value of old age depends upon the person who reaches it. To some men of early performance it is useless. To others, who are late to develop, it just enables them to finish the job.
You seem to me to be a pretty lucky young man; keep your eyes open to your mercies. That part of piety is eternal; and the man who forgets to be grateful has fallen asleep in life.
There is nothing more hateful than bad advice.
β¦but all day long I would be training myself to think, to understand, to criticize, to know myself; I was seeking for the absolute truth: this preoccupation did not exactly encourage polite conversation.
Within the heart of every person exists the flame of wisdom that transforms all suffering into kindling for the fire of creative energy.
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