> but it is useless to try to emulate passion, because a big success can make someone passionate for anything. (...and I confirm – since we make 70k€ a month per cofounder, I became more passionate).

I remember reading an article about a Chinese cockroach farmer that incidentally described how his wife said the cockroaches were misunderstood. "Look how shiny they are!"

I imagine it helped the cockroaches' case that, by her standards, she was rich and successful.