"But you are also taught that if a shark begins to circle your position -- stand your ground. Do not swim away. Do not act afraid. And if the shark, hungry for a midnight snack, darts toward you -- then summon up all your strength and punch him in the snout, and he will turn and swim away. There are a lot of sharks in the world. If you hope to complete the swim you will have to deal with them. If you want to change the world, don't back down from the sharks."
- William McRaven