阅读使人充实，谈论使人机敏，写作使人精确。

The essence of science is to ask the right questions.

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.

The computer is an interactive medium, the first medium that allows for the representation of processes that can be manipulated by the user.

Sustainability is not an option anymore; it's a necessity for the future of agriculture.