The Da Vinci Notebooks at sacred-texts.com
  Ut bene respondet Naturae ars docta! dedisset
    Vincius, ut tribuit cetera  sic animam 
  Noluit ut similis magis haec foret: altera sic est:
    Possidet illius Maurus amans animam.
  Hujus quam cernis nomen Lucretia, Divi
    Omnia cui larga contribuere manu.
  Rara huic forma data est; pinxit Leonardos, amavit
    Maurus, pictorum primus hic, ille ducum.
  Naturam, ac superas hac laesit imagine Divas
    Pictor: tantum hominis posse manum haec doluit,
  Illae longa dari tam magnae tempera formae,
    Quae spatio fuerat deperitura brevi.
467:861 1560: These three epigrams on the portrait of Lucrezia Crivelli, a picture by Leonardo which must have been lost at a very early date, seem to have been dedicated to Leonardo by the poet. Leonardo used the reverse of the sheet for notes on geometry.