I am only about half alive a large part of my strength is...

I am only about half alive a large part of my strength is consumed in sitting up or walking. My nervous system is a shattered wreck, and I am absolutely bored & listless save when I come upon something which peculiarly interests me. However so many things do interest me, & interest me intensely, in science, history, philosophy, & literature; that I have never actually desired to die, or entertained any suicidal designs, as might be expected of one with so little kinship to the ordinary features of life.