The greatest enemy will hide in the last place you would ever look Julius Ceacar 75 BC The only way to get smarter, is to play a smarter opponent The Fundamentals of Chess 1885
The Rule of Business - Protect your investment Ettiqette of a Banker 1775
There is no avoiding war - It can only be postponed to the advantage of your enemy Machiavelli
Strategy is not planning in the sense of working through a to-do list, but rather it requires quick response appropriately to changing conditions. Planning works in a controlled but competitive environment, and competing plans collide, creating situations that no one planned for.
The Art of War 6th century BC by Sun Tzu