Johannes Kepler — "I am a Lutheran astrologer, I throw away the nonsense and keep the hard kernel."

"The human mind is capable of understanding the divine plan."

"The world is a book, and those who do not travel read only one page."

"I also ask you my friends not to condemn me entirely to the mill of mathematical calculations, and allow me time for philosophical speculations, my only pleasures."

"Provide ship or sails adapted to the heavenly breezes, and there will be some who will not fear even that void [of space]… . So, for those who will come shortly to attempt this journey, let us establi…"

"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 s…"