It is certain my disorder was in a great measure hypochondriacal.

The vapors is a malady common to people in fortunate situations: the tears I frequently shed, without reason; the lively alarms I felt on the falling of a leaf, or the fluttering of a bird; inequality of humor in the calm of a most pleasing life; lassitude which made me weary even of happiness, and carried sensibility to extravagance, were an instance of this.

We are so little formed for felicity, that when the soul and body do not suffer together, they must necessarily endure separate inconveniences, the good state of the one being almost always injurious to the happiness of the other.

Had all the pleasure of life courted me, my weakened frame would not have permitted the enjoyment of them, without my being able to particularize the real seat of my complaint; yet in the decline of life; after having encountered very serious and real evils, my body seemed to regain its strength, as if on purpose to encounter additional misfortunes; and, at the moment I write this, though infirm, near sixty, and overwhelmed with every kind of sorrow, I feel more ability to suffer than I ever possessed for enjoyment when in the very flower of my age, and in the bosom of real happiness.
To complete me, I had mingled a little physiology among my other readings: I set about studying anatomy, and considering the multitude, movement, and wonderful construction of the various parts that composed the human machine; my apprehensions were instantly increased, I expected to feel mine deranged twenty times a day, and far from being surprised to find myself dying, was astonished that I yet existed! I could not read the description of any malady without thinking it mine, and, had I not been already indisposed, I am certain I should have become so from this study.

Finding in every disease symptoms similar to mine, I fancied I had them all, and, at length, gained one more troublesome than any I yet suffered, which I had thought myself delivered from; this was, a violent inclination to seek a cure; which it is very difficult to suppress, when once a person begins reading physical books.