I had bought two male chimps from a primate colony in Holland. They lived next to each other in separate cages for several months before I used one as a [heart] donor. When we put him to sleep in his cage in preparation for the operation, he chattered and cried incessantly. We attached no significance to this, but it must have made a great impression on his companion, for when we removed the body to the operating 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.

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I walked a mile with Pleasure She chattered all the way, But there was nothing I could learn From all she had to say.
I walked a mile with Sorrow And never a word said she; But, oh, all the things I learned When Sorrow walked with me.

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I walked a mile with Pleasure
She chattered all the way
But there was nothing I could learn
From all she had to say
I walked a mile with Sorrow
And never a word said she
But, oh, all the things I learned When Sorrow walked with me.

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