I abhor vivisection. It should at least be curbed. Better, it should be abolished. I know of no achievement through vivisection, no scientific discovery, that could not have been obtained without such barbarism and cruelty. The whole thing is evil.

We always look to get off to a fast start. That's our game. It's no surprise to anyone who has seen us.

…when we removed the body (of his cagemate) to the operation room, the other chimp wept bitterly and was inconsolable for days. The incident made a deep impression on me. I vowed never again to experiment with such sensitive creatures.

There's no such thing as legacies. At least, there is a legacy, but I'll never see it.

No more Mrs. Nice Guy, she's such a dreadful bore./ I'm into vivisection, not polishing the floor.

I believe I am not interested to know whether vivisection produces results that are profitable to the human race or doesn’t. To know that the results are profitable to the race would not remove my hostility to it. The pains which it inflicts upon unconsenting animals is the basis of my enmity toward it, and it is to me sufficient justification of enmity without looking further.