For me it's always contingent on getting a sound-the sound always suggests what kind of melody it should be. So it's always sound first and then the line afterwards.
People assume that the meaning of a song is vested in the lyrics. To me, that has never been the case. There are very few songs that I can think of where I remember the words.
What I believe is that people have many modes in which they can be. When we live in cities, the one we are in most of the time is the alert mode. The 'take control of things' mode, the 'be careful, watch out' mode, the 'speed' mode - the 'Red Bull' mode, actually. There's nothing wrong with it. It's all part of what we are.
When I was young, an eccentric uncle decided to teach me how to lie. Not, he explained, because he wanted me to lie, but because he thought I should know how it's done so I would recognise when I was being lied to.