Prayer 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 SevilleTolle numerum omnibus rebus et omnia pereunt.Take from all things their number and all shall perish.
Isidore of SevilleIt is agreed that all sound which is the material of music is of three sorts. First is harmonica, which consists of vocal music; second is organica, which is formed from the breath; third is rhythmica, which receives its numbers from the beat of the fingers. For sound is produced either by the voice, coming through the throat; or by the breath, coming through the trumpet or tibia, for example; or by touch, as in the case of the cithara or anything else that gives a tuneful sound on being struck.
Isidore of Seville