Architect Santiago Calatrava talking about his new Chicago tower? Fuhgeddaboudit! But put a pen in his hand and have him draw? It’s magic. “While this drawing business has elements of showbiz — what a Disney animator he would have been! — it’s also Calatrava’s way of thinking: dreaming onto the sketchpad, trolling for inspiration, one seemingly unrelated image giving way to another and another until something clicks and a path opens up. Birds lead to human figures, which lead to eyes, which lead to something like a church monstrance.”