[Demigod79]

There was once a great Korean Buddhist monk called Wonhyo who was travelling to China to study Buddhist texts, along with another monk. One night they were forced to find shelter and, locating a cave of some kind they spent the night there. However, the next morning Wonhyo found to his astonishment that it wasn't a cave, but an ancient tomb. There were skulls littered inside (over the night he became thirsty and drank some water from some gourd which actually turned out to be someone's head!). They spent the night again in the tomb and this time Wonhyo was visited by ghosts and spirits who haunted him throughout the night. This event sparked his enlightenment and he realized that everything was inside the mind; it was only when he realized he was inside a tomb that ghosts appeared. It's possible that your father telling you he saw ghosts and the stories of ghosts you've heard brought into existence your own ghosts. The important thing to remember is that it's all in the mind, and your awareness (even subconscious awareness) is what causes them to exist.