“You are never too old to set another goal, or to dream a new dream . . ."

C. S. Lewis did not say.

That's right, that statement, frequently attributed to C. S. Lewis, is something he didn't say.

And that might be because you can indeed be too old to achieve a goal or dream.  And at some point, while you may dream it, it's a species of regret.

Not that we don't all have regrets, and indeed we should have regrets.  Edith Piaf did say "I don't regret anything", or rather sang it. . .in French. . . but that's not a very sound way of viewing things, quite frankly.  "I don't regret anything" might as well mean "I haven't learned anything", unless we don't regret our errors as we learned from them.  Even then, a person ought to rationally regret our trespasses, as the Lord's Prayer counsels that we do.