They are paraphrasing ralph waldo emerson
Your actions speak so loudly, I can not hear what you are saying.
https://www.goodreads.com/quotes/486985-your-actions-speak-so-loudly-i-can-not-hear-what
But based on their user name they might be getting it more from the bad religion song “I want to conquer the world”
I thought it was related to the lemmy.world vegan shitpost spree