Actually, most things I say in public lead more or less directly to my own compositional practice, so I should be careful about generalizing lest they come back to haunt me.
My mother learned that she was carrying me at about the same time the Second World War was declared; with the family talent for magic realism, she once told me she had been to the doctor's on the very day.
I maintain also that substances, whether material or immaterial, cannot be conceived in their bare essence without any activity, activity being of the essence of substance in general.