Jerome Kagan

"The dominant premise in evolution and economics is that a person is being loyal to natural law if he or she attends to self’s interest and welfare before being concerned with the needs and demands of family or community. The public does not realize that this statement is not an established scientific principle but an ethical preference. Nonetheless, this belief has created a moral confusion among North Americans and Europeans because the evolution of our species was accompanied by the disposition to worry about kin and the collectives to which one belongs."

"He recognized that we learn in part by disrupting what we knew in the past, and that can be dislodging to our stability and sense of what we understand, but that’s how we grow."