Nothing affects us more than romantic love. Intoxicating, all consuming, heartbreaking, love can engender immense feelings of desperate longing, passion, dark jealousy, ecstasy and invincibility.  Love makes us see life anew, take risks, be courageous, spontaneous and creative. It sets off all sorts of chemical reactions in our bodies and brains, and of course, the heart.

So why do we love? What drives us, is it mere biology, or a basic human need to love?

If romantic love has a purpose, neither science nor psychology has discovered it yet. Philosophers down the ages have explored this question and put forward some intriguing answers. Enjoy this interesting inquiry into love, illustrated with quirky pictures.