Only from the outside did my career seem to run in a purposeful straight line–in reality it did not. Would I have lived only in and by experiments otherwise? When not performing an experiment, I felt no pleasure, indeed no connection with life at all. But in the experiment? Did I obtain satisfaction here at least? I must answer no.

The experimenter is like God, but on a small scale. He is as immeasurably small as God is great.

So it was with the animals. So it was with my wife. The animals were mine to do with as I pleased. I had paid cash for them, on one occasion four hundred rhesus monkeys for a transmission experiment that required that species. No one could stop me from doing what I did–there are so few moral impediments to the investigator anywhere in today’s world.

The animal has no inkling of its fate. The investigator does, of course, the experimenter knows what is coming. He alone knows what must come. He has long since weighed his basic interest in the matter against the animal’s interest in being alive and staying healthy and untormented, and found the weight of the suffering creature to be wanting. Perhaps he deigns to take the condemned animal, a dog, say, out of its cage himself. It barks merrily, lifts its head high, looks around with curiosity. It tries to run, stiff from lying down so long. It is cheerful. It needs him, too. Did I make the world the way it is? It sniffs the air with its moist, dark nostrils and supposes that the man in the white lab coat is going to lead it outside on the grimy cord about its neck, or to a feeding dish. The man now lifts the animal up by the scruff of the neck and lays it out. On the table. On the plank, which has been well sluiced down. He grasps the rib cage. He feels the little creature’s heart thumping excitedly against its ribs. A monkey is another matter. A monkey is a caricature of a man. Or is a man a caricature of a monkey? But in the way they react to great pain, man and monkey are much alike. An older, well-nourished rhesus monkey–especially the male, whose system is more finely tuned than the female’s . . . I will not go on with this here. Perhaps later I will get around to describing what happens in a scientific experiment in which hundreds and thousands of animals are sacrificed one after another ad majorem hominis gloriam.