What does if what most men admire they would despise it would look as if mankind were growing wise?

The phrase suggests that if men truly valued wisdom and virtue, they would reject superficial traits and societal norms that typically garner admiration, such as wealth or power. This implies a shift in values, where genuine qualities are recognized and appreciated over fleeting appearances. Ultimately, it envisions a world where true wisdom leads to a deeper understanding of what is worthy of admiration, fostering a more enlightened society.