The prophets were the heralds of the fundamental truth that religion and ethics are inseparable, and that ethical conduct is the supreme and sufficient religious act. If that principle had been fully adopted in our religious life, it would have turned the full force of the religious impulse into the creation of right moral conduct and would have made the unchecked growth and accumulation of injustice impossible.

p. 7 - Christianity and the Social Crisis (1907) - Ch.1 The Historical Roots of Christianity the Hebrew Prophets