All the actors I respect especially old-Hollywood actors the reason I think so many of them have had long careers is that there is a sort of mystery about them. You don't know what they do on Friday nights when they go home from work. You have no clue. You have this sort of fantasy about them.
When I began in 1960 individuality wasn't an accepted thing to look for it was about species-specific behaviour. But animal behaviour is not hard science. There's room for intuition.