There is nothing spooky about mindfulness. It is simply a state of clear, nonjudgmental, and undistracted attention to the contents of consciousness,… - Sam Harris

In a now famous thought experiment, the philosopher Derek Parfit asks us to imagine a teleportation device that can beam a person from Earth to Mars. Rather than travel for many months on a spaceship, you need only enter a small chamber close to home and push a green button, and all the information in your brain and body will be sent to a similar station on Mars, where you will be reassembled down to the last atom. Imagine that several of your friends have already traveled to Mars this way and seem none the worse for it. They describe the experience as being one of instantaneous relocation: You push the green button and find yourself standing on Mars — where your most recent memory is of pushing the green button on Earth and wondering if anything would happen. So you decide to travel to Mars yourself. However, in the process of arranging your trip, you learn a troubling fact about the mechanics of teleportation: It turns out that the technicians wait for a person’s replica to be built on Mars before obliterating his original body on Earth. This has the benefit of leaving nothing to chance; if something goes wrong in the replication process, no harm has been done. However, it raises the following concern: While your double is beginning his day on Mars with all your memories, goals, and prejudices intact, you will be standing in the teleportation chamber on Earth, just staring at the green button. Imagine a voice coming over the intercom to congratulate you for arriving safely at your destination; in a few moments, you are told, your Earth body will be smashed to atoms. How would this be any different from simply being killed? To

One of the monumental ironies of religious discourse can be appreciated in the frequency with which people of faith praise themselves for their humility, while condemning scientists and other nonbelievers for their intellectual arrogance. There is, in fact, no worldview more reprehensible in its arrogance than that of a religious believer: the creator of the universe takes an interest in me, approves of me, loves me, and will reward me after death; my current beliefs, drawn from scripture, will remain the best statement of the truth until the end of the world; everyone who disagrees with me will spend eternity in hell... An average Christian, in an average church, listening to an average Sunday sermon has achieved a level of arrogance simply unimaginable in scientific discourse - and there have been some extraordinarily arrogant scientists.

The feeling that we call "I" seems to define our point of view in every moment, and it also provides an anchor for popular beliefs about souls and freedom of will. And yet this feeling, however imperturbable it may appear at present, can be altered, interrupted, or entirely abolished.