Besides, do any of us understand what we are doing? If we did, would we ever do it?

It would positively be a relief to me to dig Shakespeare up and throw stones at him.

There is in man a specific lust for cruelty which infects even his passion of pity and makes it savage.

Man's inhumanity to man is only surpassed by his cruelty to animals

I like a state of continual becoming, with a goal in front and not behind.

Even if animal experimentation was proved to be of value, it would be morally wrong.

Few of us have vitality enough to make any of our instincts imperious.