While humanists have pondered the subject of love to the point of obsessiveness, philosophers have steadfastly ignored it. The word philosophy means love of wisdom, but the absence of love from philosophical discourse is curiously glaring. In The Erotic Phenomenon, Jean-Luc Marion attends to this dearth with an inquiry into the concept of love itself.Marion begins with a critique of Descartes' equation of the ego's ability to doubt with the certainty that one exists. We encounter love, he says, when we first step forward as a lover: I love therefore I am, and my love is the reason I care whether I exist or not. This philosophical base allows Marion to probe several manifestations of love and its variations, including carnal excitement, self-hate, lying and perversion, fidelity, the generation of children, and the love of God. Throughout, Marion stresses that all erotic phenomena stem not from the ego as popularly understood but instead from love.