Letters are signs of things, symbols of words, whose power is so great that without a voice they speak to us the words of the absent; for they introduce words by the eye, not by the ear.
Isidore of SevilleNothing exists without music, for the universe itself is said to have been framed by a kind of harmony of sounds, and the heaven itself revolves under the tone of that harmony.
Isidore of SevilleTeaching unsupported by grace may enter our ears, but it never reaches the heart. When God's grace does touch our innermost minds to bring understanding, then his word, which is received by the ear, can sink deep into the heart.
Isidore of SevilleTolle numerum omnibus rebus et omnia pereunt.Take from all things their number and all shall perish.
Isidore of SevillePrayer purifies us, reading instructs us. Both are good when both are possible. Otherwise, prayer is better than reading.
Isidore of SevilleNumber is divided into even and odd. Even number is divided into the following: evenly even, evenly uneven, and unevenly uneven. Odd number is divided into the following: prime and incomposite, composite, and a third intermediate class (mediocris) which in a certain way is prime and incomposite but in another way secondary and composite.
Isidore of Seville