“Once, there was a civilization,” says the announcer in the Superman: The Movie trailer, over a shot of Jor-El doing science stuff with crystals, “much like ours, but with greater intelligence, greater powers, and a greater capacity for good.”
Jor-El touches the machine, and the starship rises to the ceiling, and then everything goes to hell. We see people fall into the red pit of their doomed civilization, and then: BLAM! the whole planet explodes.
“In one tragic moment,” the announcer resumes, “that world was destroyed. But there was one survivor.” We see Kal-El in the star bubble, a brief clip of the crash landing, and then Pa Kent is kicking at his tire. Ma taps him on the shoulder, and they look at the wreck of the spaceship.
As they gaze in wonder, the announcer says, “Because of the wisdom and compassion of Jor-El — because he knew the human race had the capacity for goodness — he sent us his only son.”
The music swells, and we see little K, standing up with his arms outstretched, and we wonder: if Jor-El was so all-fired wise and compassionate, maybe he could also have sent some pants?