Most people admire those who live long lives and become ancient or immortal (centenarian). Some people are envious, and some want to be able to do the same. Most people aspire to longevity through good health of the body and mind. Tortoise: The Way of Longevity is written because people want to know what the immortals know, and if it is a secret or if it is just genes. Others realize it is a secret, and want to ask the immortals to share what they know and are hiding from the rest of us. There have been many experiments to try and figure out the secret trick or elixir, but to no avail. Many...