When it comes to creating a perennial seller, the principle to never lose sight of is simple: Create word of mouth.

In 1937, a British literary critic named Cyril Connolly sat down to write a book around an unusual question: How does an author create something that lasts for ten years?

They must study the classic work in their fields, emulate the masters and the greats and what made their work last.

Will this piece stand the test of time?” (If not, what can you change to make it less timely and more timeless?)