Benjamin Franklins, "the way to wealth," he brags about what being the surest way to achieve prosperity?

Reason and wisdom.

Explanation:

In the article "The Way to Wealth", Benjamin Franklin says that the best way to achieve prosperity is through reason and wisdom. He advice the readers not to depend too much upon their own industry, frugality, and prudence alone. They must also be reasonable and must seek blessings from the God. Thus, one must give humbly charity and help others in order to gain blessings. In this way, Benjamin Franklin believes that one would become prosperous in life.