[183] [cap.33] There are also many various fountains of instruction, by means of which most nutritious reasonings have sprung up like the trunks of palm-trees; "for," says Moses, [108] "they came to Aileim, and in Aileim there were twelve fountains of water and seventy trunks of palm-trees. And they pitched their tents there by the side of the water." [109] The name Aileim is interpreted to mean "vestibules," a symbol of the approach to virtue. For as vestibules are the beginning of a house, so also are the encyclical preliminary branches of instruction the beginning of virtue,