Johannes Kepler

"God is subtle, but he is not malicious."

"I have cleared up the whole business, but the answer does not come out as it should."

"The resistance to a ship's advance through the water is as the square of the velocity."

"Let the man who would move the world first move himself."

"How did it happen that the poet said, 'Sing O Goddess of the wrath of Achilles'? How did Homer compose the Iliad?"

"I was merely thinking God's thoughts after Him."

"The movements of the heavens are nothing but a continuous song for several voices."

"Man is a creature of such kind that he is not easily satisfied."

"What is this force by which the sun holds the planets in the bonds of its embrace?"

"The study of nature is the origin of all true piety."

"All things are not difficult, only the beginning is difficult."

"I am on fire with an unquenchable desire to know the causes of things."

"The mind of man is divided into two parts, one of which is rational, the other irrational."

"It is indeed an audacious and almost impious undertaking to discuss the nature of all things."

"Wealth consists not in having great possessions, but in having few wants."

"I stand by my position that the greatest good in life is the knowledge of truth."

"The beautiful order and harmony of the universe forced me to admit the existence of some superior force."

"Regard it as just as desirable to build a chicken coop as to build a cathedral."

"Things are numbers is a saying old in date and new in fashion."

"The sun, with all those planets revolving around it and dependent on it, can still ripen a bunch of grapes as if its sole concern were a bunch of grapes."

"I have discovered nothing but I do not despair."

"Assiduous observation and accurate mathematical analysis are the foundations of astronomy."

"There is nothing in the intellect that was not first in the senses."

"Harmony is the mother of all relationships."

"The geometry of the universe itself is a symphony of proportions."

"In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual."

"The Earth, though inhabited and, if animate, affected by the rest of the world and especially by the sun, is in so far a creature."

"I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use."

"Among all the sciences that seek to understand nature, astronomy is the one that lifts the human mind most powerfully to the contemplation of the divine."

"The world soul moves all things to love."