Human psychological features—such as personality, skills, and autobiographical memories—are stored long-term in the brain’s structural elements. The continuous electrical activity of brain cells is almost certainly not required to maintain this information. The most widely supported neuroscientific hypothesis is that such storage depends mainly on the strength of the connections between brain cells. Other structures may also contribute, but whatever they are, they—and the strengths of these connections—can be preserved by creating chemical bridges (cross-links) between proteins in the brain. If, in addition, chemical substances that prevent water from freezing are introduced, the information in the brain can be stored for hundreds of years at low, though not necessarily extremely low, temperatures. This method of preservation and storage already exists. Reading out this information from an entire human brain is not currently possible. Even if it were, faithfully emulating the human brain and body would require enormous computational resources. However, progress in structural neuroscience (which will eventually enable readout) and computational neuroscience (which will enable emulation) has been exponential. This is why we argue that brain preservation should be made available, on the largest possible scale, to anyone who desires it as a bridge toward restoration to life by future technologies. We also argue that human brain preservation offers a path to prevent possibly disastrous consequences of creation or emergence of artificial super intelligence.