“We must be learning if we are to feel fully alive, and when life, or love, becomes too predictable and it seems like there is little left to learn, we become restless - a protest, perhaps, of the plastic brain when it can no longer perform its essential task.”
Source : Norman Doidge (2007). “The Brain That Changes Itself: Stories of Personal Triumph from the Frontiers of Brain Science”, p.116, Penguin