Kids Say the Darndest Things

After finally being able to open the back door by himself:
"Hey! Double thumbs up! I did it!"

At bedtime:

"Do you think it would be good for people to only eat grass?"

"I don't know for sure."

"Do you think if someone helps me, I can come back after I die?"

"I don't know about that either."

"Why don't you know?"

"Some questions I don't know the answer to sweetie."

"Well, how about this one - is the sky blue? "