"Ethical religion can be real only to those who are engaged in ceaseless efforts at moral improvement. By moving upward we acquire faith in an upward movement, without limit"

This quote by Felix Adler speaks with the idea that ethical faith can just be genuinely experienced by those who are actively aiming to become better people. Adler recommends that by continuously aiming to improve ourselves morally, we can establish a faith in an ever-upward movement, without any end in sight. This suggests that the journey of moral improvement is never-ending, and that the more we make every effort to become better individuals, the more faith we will have in our own moral progress. Adler's quote encourages us to keep pushing ourselves to progress, and to never ever give up on our ethical journey. It is just through nonstop effort that we can really experience the power of ethical religion.