the gravity from the moon pushes and pulls in large bodies of water. you can slightly feel it if you sit in the bath very still. and you can blow in a bowl of water to see it too. :)
Sun Tzu was the author of The Art of War, an early but insightful primer on war, diplomacy and statecraft. He lived during the Axial Period, ca. 500 BCE and is thought to have been a general.Also,...