This book separated two men.

They both lived in the same city.

They had similar incomes.

Same opportunities.

Same fears.

One kept doing what everyone does:

Work, consume, wait… and repeat.

The other understood something different.

Something uncomfortable.

Something that no one taught him at school.

He understood the formula.

Not a magic formula.

Not an empty promise.

An invisible structure that governs who accumulates wealth… and who pursues it all his life.

Years later, one was still buying handkerchiefs.

The other sold them.

And not by luck.

Not for contacts.

Not for talent.

For understanding.