What poems, famous sayings, maxims or proverbs can persuade friends not to litter?

Everybody is responsible for protecting the environment

My friend, it is wrong for you to litter. If everyone is like you, how many places on the earth are clean and the environment on the earth will be terrible! As long as we take a step forward, moral growth is a big step. Do you know I'm waiting for you? Trash can is not rubbish, but quality and morality. Pick up the rubbish on the ground and the earth will be quiet. Don't throw your face on the ground casually. Please don't pollute the clothes on the ground.