On the very first page of his new bookGreenlights (Crown Publishing), Matthew McConaughey declares that it is "not a traditional memoir" but rather "a playbook" based on the adventures of his life. Throughout the 304-page book, released Tuesday after beingannounced earlier this year, the Oscar-winning actor, known as much for eccentric aphorisms and persona as he is for his acting, reflects on the prominent moments in both his personal and professional life.