Many consider the heart as the most important organ. There is a way to maintain the heart in good condition. Most of the organs in the body are in an immobile state. But the heart is continually active. It is difficult to perform an operation on an organ which is ceaselessly at work. If the heart has to be stopped beating for performing an operation, this cannot be done for more than two or three minutes. No operation can be done in such a short time. Hence heart specialists investigated the methods by which the heart could be kept inactive for a few hours so that cardiac operations could be performed. The heart-lung machine was designed to enable heart operation to be done.
The heart is the primary organ for keeping the body well. Only when the heart is sound there can be proper blood supply to the whole body. Who invented the heart-lung machine? It is a product of human, intelligence. This shows that intelligence is even superior to the heart. It is this intelligence that has been responsible for the discovery of numerous devices. (SSS Vol.28, pp. 364-365)