我喊出我野性的狂叫，站在世界屋脊上。
Every child should have mud pies, grasshoppers, water bugs, tadpoles, frogs, mud turtles, elderberries, wild strawberries, acorns, chestnuts, trees to climb, brooks to wade in, water lilies, woodchucks, bats, bees, butterflies, various animals to pet, hayfields, pine-cones, rocks to roll, sand, snakes, huckleberries and hornets; and any child who has been deprived of these has been deprived of the best part of education.
Mathematics is the most beautiful and most powerful creation of the human spirit.
没有科学，水产养殖就会停滞；没有道德，它就会崩溃。
Every observation brings us closer to answering fundamental questions about the cosmos.
The more we study the more we discover our ignorance.