This quote by John Lennon is a call for peace and understanding. It is a plea for people to come together and put aside their differences in order to develop a more peaceful world. The phrase "give peace a possibility" implies that peace is something that needs to be actively pursued and worked towards. It is a suggestion that peace is not something that will simply take place by itself, however rather something that requires to be actively sought out and worked towards. This quote is a call to action, prompting individuals to take the initiative to develop a more serene world. It is a reminder that peace is possible, which it depends on us to make it take place.