Albert Einstein's refusal to undergo surgery before his death was not due to any personal choice or decision on his part. In fact, Einstein passed away on April 18, 1955, from an abdominal aortic aneurysm, which is a condition involving the dilation or weakening of the main blood vessel in the abdomen.
During that time, the surgical techniques and knowledge available for treating such conditions were not as advanced as they are today. Einstein's aneurysm was diagnosed at a stage where surgical intervention would have been extremely risky, and the chances of success were relatively low. Additionally, Einstein was already 76 years old at the time, which further contributed to the decision not to pursue surgery.
It's important to note that the decision not to undergo surgery was made by Einstein's doctors based on the medical circumstances and the available treatment options at that time. Einstein himself did not have an active role in making this decision.