If you don’t judge some books by their cover, you’re going to spend your entire life looking for the right book.
Sharks don’t care whether you’re good or bad, or nice or mean to them. They will try to eat you either way. Do your best to avoid sharks. If you are attacked by a shark, you have to fight back. You have no other options at that point. This also applies to human sharks.
Once in a while, we should consider whether or not the things we say, write, and think still seem to be true to us. Evaluate your thoughts and words. Embrace what still seems true to you. Evolve when something no longer seems true to you.