Knowing limits

The moment you talk about limits, you are necessarily seen as an old fogy. I mean, it is generally the aged who start feeling limited in what they can do. The young generally feel that there is no limit to what they can do. Which, by the way, is not untrue of me, after all. I am no spring chicken, no matter what they say about 'Sixty being the new twenty' or whatever is the catchphrase these days