“Chemistry is a beautiful system,” Dr. Able said. “Every block builds on the previous block. If you don’t understand chapter 1, there’s no point in going on to chapter 2. Chapter 1 provides the keys to chapter 2, and chapters 1 and 2 together provide the keys to chapter 3. We’re on chapter 4 now. It isn’t possible to suddenly start working hard on chapter 4 and catch up to the rest of the class. You have no keys.”

“Chemistry is a beautiful system,” Dr. Able said. “Every block builds on the previous block. If you don’t understand chapter 1, there’s no point in going on to chapter 2. Chapter 1 provides the keys to chapter 2, and chapters 1 and 2 together provide the keys to chapter 3. We’re on chapter 4 now. It isn’t possible to suddenly start working hard on chapter 4 and catch up to the rest of the class. You have no keys.”

— Ann Patchett