Sam Harris is part philosopher, part neuroscientist (with a Ph.D. from UCLA) and part contemplative seeker. His writing is smart, incredibly clear, and unapologetically direct. In Waking Up, he applies his intellect to the subject of discussing spirituality rationally—devoid of the baggage of both religious superstition/dogma and New Age woo woo-ness. Big Ideas: Mindfulness + meditation, stages of spiritual development, cultivating choice, and accepting while striving.