That is the big problem with people because they always feel they're tired. You know? I have this student, you know, I think he's in his early 20's, you know? He's out now for a couple of years. And I call him and I say, 'What have you been doing? Have you done anything new?' What do I get back? 'Jules, you know, I'm five days at the studio and I'm tired'. But hell, at your age how can you be tired, you know? But, you know, they don't do anything. So they make a living, make a good living, all that is good and it's important because they have kids. But they say, 'I'm tired'. Well, that's [unclear]. Only out of the hundreds that I had as students... they're big talents, they're all over the place... there's only two girls, three girls that are doing work. They're teaching and they're still doing their own stuff. And they're all good, they're very good. But that's a tiny number. Three out of about 1500 or something like that. But they will all say, I'm tired. Well, what can I say? If she tells me she's tired then I think, that's it, you're finished, you know? To a degree. But, naturally, if you see good talent, you try to push, you try to talk to her or him, as I do. But if they physically not up to it, there's not a damn thing you can do. And that's what it's all about. Why I do have this amount of energy? I don't know. But I have no problem of performing. As… as I do, I produce as much as I did 20 years ago, everything. But when he says, 'I'm tired', what are you going to tell him? There's nothing I can do.