What does it mean to put aside the noise of the world and keep the purity of life?
Get rid of the noise and keep the inner peace and purity, so as to preserve the essence of life. "Getting rid of the hubbub of the world" means "keeping a clear head and independent thinking ability, free from external noise and interference", while "keeping life pure" means "keeping inner purity and kindness, free from secular temptation and pollution, and keeping life true and beautiful".