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.

I vowed never again to experiment with such sensitive creatures.

It is infinitely better to transplant a heart than to bury it to be devoured by worms.

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.

The individual is the brain, not the heart.

I believe often that death is good medical treatment because it can achieve what all the medical advances and technology cannot achieve today, and that is stop the suffering of the patient.

On Saturday, I was a surgeon in South Africa, very little known. On Monday, I was world renowned.