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 sea is a mirror of the soul—endless, shifting, and unfathomable.

数学的本质在于它的自由。

The only person you are destined to become is the person you decide to be.

你越诚实和脆弱，人们就越能与你产生共鸣。