Prof. Walsh: These are the things we want. Simple things. Comfort,sex, shelter, food. We always want them and we want them all the time. The id doesn't learn; it doesn't grow up. It has the ego telling it what it can't have and it has the superego telling it what it should want. But the id works solely out of the pleasure principle. It wants. Whatever social skills you've learned, however much we've evolved, the pleasure principal is at work in all of us. So, how does this conflict with the ego manifest itself in the psyche? What do we do when we can't have what we want?