it was only based of love for the last 40 years it was based off fear and hate prior to that,.. (religion.blogs.cnn.com)
But it also nourishes the achievement of a vastly larger number of voluntary associations, a higher degree of voluntary social cooperation, a broader base of love and gratitude for the commonwealth, and a more explicitly consensual national community than was known in ancient or medieval times. (firstthings.com)
By most accounts, exploring the neurochemical basis of love in the human brain has proved to be a thorny enterprise. (discovermagazine.com)