As right and wrong changes, if you take the position, "I know right. And if you completely disagree with me, if you partially disagree with me, if you even quibble with me, then you're wrong," then there's no discussion, no tolerance, no evolution, and certainly no learning.
A medida que el bien y el mal cambian, si tomas la posición: “Yo tengo razón y si discrepas totalmente conmigo o difieres parcialmente, o incluso si pones objeciones, estás equivocado”, entonces no hay discusión, no hay tolerancia, ni evolución, ni ciertamente aprendizaje.