There is a woe that is wisdom, a woe that is madness.
Eccentricity is not, as dull people would have us believe, a form of madness. It is often a kind of innocent pride, and the man of genius and the aristocrat are frequently regarded as eccentrics because genius and aristocrat are entirely unafraid of and uninfluenced by the opinions and vagaries of the crowd.
Madness need not be all breakdown. It may also be breakthrough.
Love is a temporary madness; it erupts like volcanoes and then subsides. And when it subsides you have to make a decision. You have to work out whether your roots have so entwined together that it is inconceivable that you should ever part. Because this is what love is. Love is not breathlessness, it is not excitement, it is not the promulgation of eternal passion. That is just being in love, which any fool can do. Love itself is what is left over when being in love has burned away, and this is both an art and a fortunate accident. Those that truly love have roots that grow towards each other underground, and when all the pretty blossoms have fallen from their branches, they find that they are one tree and not two.
—Louis de Bernières in Captain Corelli's Mandolin
If this be not love, it is madness, and then it is pardonable.