If you always do what you did, you'll always get what you got. Marian Diamond More Quotes by Marian Diamond More Quotes From Marian Diamond The brain is a three pound mass you can hold in your hand that can conceive of a universe a hundred billion light-years across. Marian Diamond light science hands The human brain is the most complex mass of protoplasm on earth-perhaps even in our galaxy. Marian Diamond mass earth brain
