“Every child is born with a certain balance of faculties, aptitudes, inclinations, and instinctive leanings. In no two is the balance alike, and each different brain has to deal with a different tide of experience. I marvel, then, not that one man should disagree with another concerning the ultimate realities of life, but that so many, in spite of the diversity of their inborn natures, should reach so large a measure of agreement.” – Sir Arthur Keith, Living Philosophies