Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:
Identify the major themes of this book.

### Input:
The Catcher in the Rye by J.D. Salinger

### Response:
The major themes of The Catcher in the Rye by J.D. Salinger are coming of age, loss of innocence, alienation, and morality.