“It was, and it was beautiful. Titan was like most planets, too many...” – Thanos, Avengers: Infinity War ... Movie Quotes Database

[about his home planet]

It was, and it was beautiful. Titan was like most planets, too many mouths not enough to go around, and when we faced extinction I offered a solution. Random, dispassionate; fair to rich and poor alike, and they called me a mad man. I'm a survivor.

More from Avengers: Infinity War

Thanos With all six stones, I could simply snap my fingers and they would all cease to exist. I call that... mercy. Peter Quill Flash Gordon? By the way, that's a compliment. Don't forget, I'm half-human. So that 50% of me that's stupid? That's 100% you. Peter Quill Aw, man.