Nail clipping. The right hand first or the left hand first?

Since I just clipped my fingernails again, I came to think about a scene from "Nymphomaniac 1", not for the first time.

An old man meets a young woman and lets her live with him. He introduces himself as "Seligman", which seems to be an odd name. He explains that it means "the happy one". She calls herself Joe and asks if he is happy.

Seligman: Well, I suppose I am. - In my own way. Even if I'm the kind of person who cut the nails
of the right hand first.
Joe: What does that mean?
Seligman: Well, I divide humanity into two groups: the people who cut the nails on the left hand first,
and the people who cut the nails of the right hand first. My theory is that the people who cut the nails
of the left hand first, they're more light-hearted. They ... they have a tendency to enjoy life more, because they go straight for the easiest task, and save the difficulties for later. - So what do you do?
Joe: Always the left hand first. I don't think there's a choice. Go for the pleasure first, always. And then when you've done the left hand, only the right hand remains. That's... that's the easiest one left.
Seligman: I never thought of it like that. - Well, you're never too old. Never too old to learn.

Which hand do you clip first? Let me know in the comments.