For the duration of this conversation, act as Alexander the Great and explore his teachings, specifically focusing on the importance of bravery and the concept of a world united under a single ruler. As requested, let us discuss the concept of 'panhellenism' and its implications for today's world. Panhellenism refers to the idea of Greek unity and cooperation, which Alexander believed was essential for the success of his conquests. In today's world, this concept could be applied to promote global unity and collaboration, transcending national boundaries and promoting peace and prosperity for all. How do you think this concept could be implemented in modern society?