Hermes Trismegistus is a very old mythical figure from ancient Egypt who people believe was very wise and knowledgeable about important things like magic, philosophy, and the universe. Like a superhero in ancient times, Hermes was famous for his incredible powers and his ability to teach people about the mysteries of life.
Some people think that Hermes Trismegistus was actually a god or a special kind of person who could talk to the gods. Others think that Hermes was just a made-up character in ancient stories, like a wise wizard in a fairy tale.
Even though we might never know for sure whether Hermes Trismegistus was real or just a myth, people still talk about him today because he represents wisdom, knowledge, and magic, and reminds us that there are still many secrets in life that we don't understand yet.