De Sacrificiis Abelis Et Caini

It is right therefore to offer the first fruits of these things: and the first fruits are the language of gratitude sent up from sincere truth of mind. And this language divides itself according to appropriate divisions in the same manner as the lyre and the other musical instruments are divided. For in each of those instruments each sound is by itself harmonious, and also exceedingly adapted to making a [*]( Exodus xxiii. 19. )

symphony with the rest. As in grammar also those of the elements which are called vowels are both capable of being uttered by themselves, and they also make a complete sound in conjunction with other letters.