There’s nothing quite like the sound of someone thinking out loud, struggling to find words and ideas to match what’s in their head. Today, we are allowed to dip into the unfiltered thoughts of Oliver Sacks, one of our heroes, in the last months of his life.  Oliver died in 2015, but before he passed he and his partner Bill Hayes, in an effort to preserve some of Oliver’s thoughts on his work and his life, bought a little tape recorder. Over a year and half after Oliver’s death, Bill dug up the recorder and turned it on. Through snippets of conversation with Bill, and in moments Oliver recorded whispering to himself as he wrote, we get a peek inside the head, and the life, of one of the greatest science essayists of all time. The passages read in this piece all come from Oliver’s recently released, posthumous book, The River of Consciousness.  Special thanks to Billy Hayes for letting us use Oliver’s tapes, you can check out his work at http://www.billhayes.com/