How Selfish and Selfless Overlap

Let us say that you were a complete hedonist. You only did what made you feel good.

Wouldn't you still do things for other people? Given how we are wired, doesn't it make a person about as happy to make someone else happy as anything one can do? For instance, have you ever seen anyone making a baby laugh who looked like they were having a miserable time?

"Bring me a wave separate from the ocean and I will show you a person separate from the universe."
- Alan Watts