His best known poetry are 154 Sonnets. These are, probably, personal and, originally, intimate and consist of two cycles: the first to a “fair friend” and the second, shorter one, to a “dark lady”. The former are idealistic about love: its beauty, reassurance, longevity, joy; the latter are about the dark side of love: despair, jealousy, betrayal, lust, insecurity. Know number, addressees and characteristics of the cycles.