The Manual of Xefolius

A 3

...all innocent, so long as they do not wound the ROOTS OF IMMUTABLE TRUTHS, from which we cannot depart without stumbling, without wandering into darkness—in a word, without suffering.

COPERNICUS & TYCHO BRAHE Tycho Brahe (1546–1601) was a Danish astronomer whose observations provided the basis for Kepler's laws of planetary motion. have overthrown the system of Ptolemy Ptolemy’s geocentric model, placing Earth at the center of the universe, was the standard astronomical manual for over 1,500 years., which had reigned for sixteen centuries; and if that of Copernicus has prevailed, it is certainly not because it is self-evident, but only because it is the most plausible, and because it yields more satisfying results than the others.

Thus, if what I offer you, in order to support your curious and wavering spirit, is not to your taste, you may choose a system that pleases you more, without fear of harming your happiness or your salvation; these depend on the foundation of truths for which you have a feeling, and which I reveal to your mind, but not on arbitrary forms, or those secrets that the human mind cannot conceive and even less penetrate. Let this be said once and for all.

II.

Learned men have not yet been able to agree on the height of certain mountains a hundred times...