People have always found me challenging - I don't know why, when I am only being myself. I don't understand why they find me so annoying but they do. It is pity, but that is how it is.
It follows from what we have just said, that the natural changes of monads come from an internal principle, since an external cause would be unable to influence their inner being.
Study is the bane of childhood, the oil of youth, the indulgence of adulthood, and a restorative in old age.

