“You are entering a period of time when there will be a lot of bullies. But you must remember that what makes bullies what they are is a certain brittleness. A rock seems very hard, but when you strike it with the right force in the right place and in the right way, it will easily be cloven in two. Diamonds are hard, and yet they can be cut.
“Compare these to a tree and you will see that, although a tree seems softer, more vulnerable, and far less durable, it takes many blows to bring it down. Trees are yielding. Rocks are brittle, rocks stand firm. But trees bend and sometimes, even if they are blown over, can send forth shoots and green leaves just the same.”