A quotation by Tycho Brahe
Now it is quite clear to me that there are no solid spheres in the heavens, and those that have been devised by authors to save the appearances, exist only in their imagination, for the purpose of permitting the mind to conceive the motion which the heavenly bodies trace in their courses.
Quoted in A L Mackay, Dictionary of Scientific Quotations (London 1994)
Simplicibus itaque verbis gaudet Mathematica Veritas, cum etiam per se simplex sit Veritatis oratio.
So Mathematical Truth prefers simple words since the language of Truth is itself simple.
Epistolarum astronomicarum liber primus (1596), General Preface: In J L E Dreyer (ed), Tychonis Brahae Astronomi Dani Opera Omnia 6, 23.
Note that Veritatis simplex oratio est is a quotation from Seneca (which Tycho's original readers probably recognized).