You know, Napoleon said ‘Never interfere with an enemy while he’s in the process of destroying himself.’
In 1852 a biographical magazine also quotes Napoleon giving advice to his marshals:
“Then, gentlemen,” said Napoleon, “let us wait a little; when your enemy is executing a false movement, never interrupt him.”
An 1836 multi-volume history book titled “French Revolution” contains a version of the quotation that is similar to the one given in 1852. This history book dates the quotation to a battle in 1805. These words may have been transformed into the modern maxim:10
“In that case,” said Napoleon, “let us wait twenty minutes; when the enemy is making a false movement we must take good care not to interrupt him.”
So the advice does have a long history, and a version has been attributed to Napoleon for more than a century and three-quarters.