"I have discovered the harmony of the spheres."

"I have found the truth, and it is beautiful."

"Some of what these pamphlets [of astrological forecasts] say will turn out to be true, but most of it time and experience will expose as empty and worthless. The latter part will be forgotten [literal…"

"The diversity of the phenomena of nature is so great, and the treasures hidden in the heavens so rich, precisely in order that the human mind shall never be lacking in fresh nourishment."

"My stars were not Mercury rising in the seventh angle, but Copernicus and Tycho Brahe."