Lukas Gage. Photo: Corey Nickols/Getty Images Lukas Gage pitched his memoir in the middle of the WGA and SAG strikes . “I think the birth of it was truly me being a little bit manic,” he says. But decisions during mania were nothing new for the actor. Gage has made a lot of big decisions while feeling a little “cuckoo.” Originally, he says he wanted to write a book of essays, but publishers were much more interested in a personal memoir — especially from someone comfortable with online