As films go, The Tree of Life is a huge thing — a movie by a man with the audacity to take as his apparent subject all of human existence. “I know something about the cosmos,” Terrence Malick seems to declare, “because I grew up with two brothers under the parentage of a gruff father and a beaming, adoring mother in sun-dappled environs of Oklahoma and Texas.” He’s not wrong. The greatest filmmakers have shown us again and again that there is no story that cannot, in the right hands and with the right gestures, be spun out to dimensions that encompass questions of love and faith, life and death, regret and longing.