My abilities are limitless.

Researchers went looking for the age at which a brain stops being able to learn and never found a clean one. People take up the cello at seventy. People learn to read at fifty and it works.

The limits most of us actually run into are hours, attention and belief — and hours are the only genuinely fixed one of the three.

That's a stranger and better claim than it first sounds. Not that everything can happen at once, but that far fewer doors have been closed by biology than you may have been told.

Whatever you assumed you were too late for, check the assumption before accepting it.