The River of Consciousness

Reading a book published after its authors death, especially if he is as prodigiously alive on every page as Oliver Sacks, as curious, avid and thrillingly fluent, brings both the joy of hearing from him again, and the regret of knowing it will likely be the last time . . . [The] combination of wonder, passion and gratitude never seemed to flag in Sacks’s life; everything he wrote was lit with it. But it was his openness to new ideas and experiences, and his vision of change as the most human of biological processes that synthesized all of his work