Sapientia autem est, ut a veteribus philosophis definitum est, rerum divinarum et humanarum causarumque, quibus eae res continentur, scientia, cuius … - Cicero

For to those who have not the means within themselves of a virtuous and happy life every age is burdensome; and, on the other hand, to those who seek all good from themselves nothing can seem evil that the laws of nature inevitably impose. To this class old age especially belongs, which all men wish to attain and yet reproach when attained; such is the inconsistency and perversity of Folly! They say that it stole upon them faster than they had expected. In the first place, who has forced them to form a mistaken judgement? For how much more rapidly does old age steal upon youth than youth upon childhood? And again, how much less burdensome would old age be to them if they were in their eight hundredth rather than in their eightieth year? In fact, no lapse of time, however long, once it had slipped away, could solace or soothe a foolish old age.

A room without books is like a body without a soul.

For as I like a man in whom there is something of the old, so I like a man in whom there is something of the young; and he who follows this maxim, in body will possibly be an old man but he will never be an old man in mind.