Two Truths Cannot Contradict One Another.

I Would Say Here Something That Was Heard From An Ecclesiastic Of The Most Eminent Degree: The Intention Of The Holy Spirit Is To Teach Us How One Goes To Heaven, Not How The Heavens Go.

I Therefore Concluded, And Decided Unhesitatingly, That There Are Three Stars In The Heavens Moving About Jupiter, As Venus And Mercury About The Sun; Which At Length Was Established As Clear As Daylight By Numerous Other Observations.

By Denying Scientific Principles, One May Maintain Any Paradox.

In My Studies Of Astronomy And Philosophy I Hold This Opinion About The Universe, That The Sun Remains Fixed In The Centre Of The Circle Of Heavenly Bodies, Without Changing Its Place; And The Earth, Turning Upon Itself, Moves Round The Sun.

One Can Understand Nature Only When One Has Learned The Language And The Signs In Which It Speaks To Us; But This Language Is Mathematics And These Signs Are Methematical Figures.