“1172. The acquisition of any knowledge is always of use to the intellect, because it may thus drive out useless things and retain the good. For nothing can be loved or hated unless it is first known. 1173. As a day well spent procures a happy sleep, so a life well employed procures a happy death.
1174. The water you touch in a river is the last of that which has passed, and the first of that which is coming. Thus it is with time present.
Life if well spent, is long. 1175. Just as food eaten without caring for it is turned into loathsome nourishment, so study without a taste for it spoils memory, by retaining nothing which it has taken in.”