I've been learning about Swift and more generally about functional programming recently. In my research, I've seen lots of references to Rich Hickey's talk, Simple Made Easy, so I tracked it down today.
Wow! It's great. There's a lot in there that I find inspiring, but I'm most inspired by the clarity with which he contrasts what is simple versus what is easy, and why simplicity should be the goal. If you're interested in the craft of writing software, I highly recommend watching it.