hope springs eternal, while there's life, there's hope

(informal) what can I say, there's no doubt about it, you have to admit it

(very rare) an aggressive person will inevitably get themselves hurt

youth isn't what it used to be! the youth are all rotten!

Alternative form of il n'y a pas le feu au lac

seasons don't count for anything anymore! (used to complain that seasons aren't as well-defined as they used to be)

(colloquial) some, certain (people)

(figuratively) to get a taste of one's own medicine; to have had it coming

there is no one, there isn't a soul

don't mention it, not at all, think nothing of it, you're welcome