And Calvin’s words are a quote from George Mallory:

“Why did you want to climb Mount Everest?” This question was asked of George Leigh Mallory, who was with both expeditions toward the summit of the world’s highest mountain, in 1921 and 1922, and who is now in New York. He plans to go again in 1924, and he gave as the reason for persisting in these repeated attempts to reach the top, “Because it’s there.”

https://en.wikiquote.org/wiki/George_Mallory

They were speaking about this meme:

It has a backstory related to recent events: https://knowyourmeme.com/memes/elon-musk-laughing-at-dead-deer