What was Thomas famous book called?

Please provide more context! "Thomas" could refer to many people, each with their own potential famous book.

For example:

* Thomas Hardy: His famous book is "Far From the Madding Crowd".

* Thomas Paine: His famous book is "Common Sense".

* Thomas Sowell: His famous book is "Basic Economics".

To give you a proper answer, please tell me:

* Which Thomas are you referring to?

* What kind of book are you looking for? (e.g., fiction, non-fiction, etc.)

Once I have this information, I can help you find the correct book!