Which excerpt from the text most effectively develops this allegory? “in other studies you go as far as others have gone before you, and there is nothing more to know; but in a scientific pursuit there is continual food for discovery and wonder.” "after days and nights of incredible labour and fatigue, i succeeded in discovering the cause of generation and life; nay, more, i became myself capable of bestowing animation upon lifeless matter." "darkness had no effect upon my fancy, and a churchyard was to me merely the receptacle of bodies deprived of life, which, from being the seat of beauty and strength, had become food for the worm." "i became acquainted with the science of anatomy, but this was not sufficient; i must also observe the natural decay and corruption of the human body."