Who said "I understand now. This is what it means to belong."?

This quote is attributed to Drax.

I understand now. This is what it means to belong. - Drax

"I understand now. This is what it means to belong."

Drax

"I am Groot."

"Nothing goes over my head. My reflexes are too fast. I would catch it."

"I live for the simple things. Like how much this is going to hurt."

"Do you know what it's like to live every second of the day with the feeling that you're about to cry?"