The Good Old Days

Lucretius, On the Nature of Things 2.1166-1167 (tr. A.E. Stallings):

He rails against the present, while he has nothing but praise
For the fortunes of his father — yes, those were the good old days!

et cum tempora temporibus praesentia confert
praeteritis, laudat fortunas saepe parentis.

Literally:

And when he compares times present with times
past, he often praises his father's good luck.