No man is an island
Possible interpretation: Human beings do not (or should not) live in isolation. All people are interconnected. A person is not like an island, standing alone and surrounded by sea.Note: island (noun) = a piece of land surrounded by water
Origin: This famous idea comes to us from Meditation XVII by John Donne (1572-1631): "No man is an island, entire of itself...any man's death diminishes me, because I am involved in mankind; and therefore never send to know for whom the bell tolls; it tolls for thee."