Jor-El

Earth's sun is younger and brighter than ours was. Your cells have drunk in its radiation, strengthening your muscles, your skin, your senses. Earth's gravity is weaker, yet its atmosphere is more nourishing. You've grown stronger here than I ever could've imagined. The only way to know how strong is to keep testing your limits. You will give the people an ideal to strive towards. They will race behind you, they will stumble, they will fall. But in time, they will join you in the sun, Kal. In time, you will help them accomplish wonders.