What are the key differences between the Vedas and Upanishads in terms of their teachings and philosophies?

The Vedas are ancient texts that focus on rituals and ceremonies, emphasizing the importance of gods and sacrifices. The Upanishads, on the other hand, delve deeper into philosophical concepts such as the nature of reality, the self, and the ultimate truth. They emphasize introspection, meditation, and the pursuit of spiritual knowledge to attain enlightenment.