I remember the first sight I saw of a Passion flower ......when I was 12 & we first visited the old run down house my mum & dad bought. There were some dilapidated greenhouses in the garden & it had one of these plants full of flowers on it. I remember mum explaining the whole meaning of the crown of thorns. Your words define how good is the word passion in another concept.
I think it's a passion you either have or you don't?! I've always had it and it's got stronger as I've got older.