How much smarter can he get?

Me and Landon were sitting on the porch this afternoon, around 6:20, waiting on Dustin to get home. I had a light blanket over us, and we were looking at the moon and stars. Here are 2 conversations that we had:
Landon: Mommy, sing the moon song.
Mommy: Ok. (so I sang the "moon" song, which is the song that starts out, " I see the moon and the moon sees me.....")
Landon: Sing the star song.
Mommy: Twinkle Twinkle Little Star?
Landon: No, the other star song?
Mommy: Which one Landon?
Landon: Ugh...I can't remember!!

Landon: Mommy, I seen a spider on the porch the other night.
Mommy: You did?
Landon: Yeah, Daddy has to get that spider. (Because Daddy gets all bugs we find hehe)
Mommy: Yeah, he will get him when he gets home.
Landon: No Mommy, don't get the spider. He's a good boy. He's not mean, he's pretty. He has 2 eyes on his head and alot of legs.

I really enjoy our conversations. He is such a big boy now and it feels good for him to be able to talk to me about his day and what and who he played with. I'm glad he can tell me when he's feeling bad and what's wrong. And I especially like it when he says, "Mommy, you my best friend and my buddy."