Then love is sin, and let me sinful be.

The clergymen call us sinners, conceived and born in sin. Bah! What confounded nonsense that is. Is it a sin to love, to feel the need for love, not to be able to live without love? I consider a life without love a sinful and immoral state.

Love built on beauty, soon as beauty, dies.

In crime and enmity they lie
Who sin and tell us love can die,
Who say to us in slander's breath
That love belongs to sin and death.

Beauty was not everything. Beauty had this penalty — it came too readily, came too completely. It stilled life — froze it.

Love is something so ugly that the human race would die out if lovers could see what they were doing

love is blind
and lovers cannot see
the pretty follies
that themselves commit

We shall have a strong desire for a woman of no remarkable beauty; whilst the greatest beauty in men, or in other animals, though it causes love, yet excites nothing at all of desire. Which shows that beauty, and the passion caused by beauty, which I call love, is different from desire, though desire may sometimes operate along with it; but it is to this latter that we must attribute those violent and tempestuous passions, and the consequent emotions of the body which attend what is called love in some of its ordinary acceptations, and not to the effects of beauty merely as it is such.

Beauty means the scent of roses and then the death of roses

To be loved for beauty is a poor reward; it is to love a mask, a temporary dress, a sham unworthy of the loving heart. Your beauty which at first but dazzled me, now that I see more clearly, disappears and is not seen at all.“ Roxanne to Christian

It is not beauty that endears, it's love that makes us see beauty.

Love is only a recognition of our own guilt and imperfection, and a supplication for forgiveness to the perfect beloved. This is why we love those who are more beautiful than ourselves, why we fear them, and why we must be unhappy lovers.

Love is poison. A sweet poison, yes, but it will kill you all the same.

Children of the future age
Reading this indignant page
Know that in a former time
Love, sweet love, was thought a crime