Thanos

"What did it cost? Everything."

"The universe is finite. Its resources, finite."

"In time, you will know what it's like to lose."

"I am grateful."

"This is your home now."

"The only way to heal is to let go."

"You cannot escape your destiny."

"I respect that instinct."

"Another step forward."

"The strong are harder to kill than the weak."

"I know the cost. It's a small price for salvation."

"Your time is up."

"This is necessary."

"The strongest will survive."

"I alone am responsible."

"You cannot love something and destroy it at the same time."

"A small price to pay for salvation."

"Your resistance is admirable but futile."

"I am sorry. It had to be done."

"You remind me of the fool who came before you."

"In my defense, it was only half a plan."

"I thought by eliminating half of all life, the other half would thrive."

"I have become aware of your threats."

"This day extracts a heavy toll."

"The reward is yours."

"Your fate is sealed."

"I chose not to run."

"The only child of Thanos."

"That still accomplishes my goal."

"Failure is not an option."