Mary Wollstonecraft Shelley said this quote

The fallen angel becomes a malignant devil. Yet even that enemy of God and man had friends and associates in his desolation, I am alone.

~ Mary Wollstonecraft Shelley

There was a considerable difference between the ages of my parents, but this circumstance seemed to unite them only closer in bonds of devoted affection.

~ Mary Wollstonecraft Shelley

Seek happiness in tranquility and avoid ambition even if it be only the apparently innocent one of distinguishing yourself in science and discoveries.

~ Mary Wollstonecraft Shelley

One as deformed and horrible as myself, could not deny herself to me. My companion must be of the same species, and have the same defects... with whom I can live in the interchange of those sympathies necessary for my being...

~ Mary Wollstonecraft Shelley