Adler developed an original philosophy with a foundation in those of
Immanuel Kant and
Georg Wilhelm Friedrich Hegel that developed and transformed these roots. He considered philosophy not just a guide of life but a key to improving society and the human condition appropriate to respect for essential human dignity. Rejecting Kant's metaphysics, he embraced his stress on the intrinsic worth and dignity of the person. Combining a supreme moral principle similar to Kant's with his detailed ideas of self-realization, he emphasized the free development of the individual about societal concerns and fellowship. He preceded
John Dewey in a concern for the "problems of men" instead of philosophical technicalities. While his ideas shared some aspects of
pragmatism, he was better described as "an ethical idealist with great practical reforming zeal" he promoted an idealist version of
moral perfectionism. He was, however, realistic and not sentimental, acknowledging that man has done evil knowingly and deliberately. Adler's ethics combined an appeal to universal principles with
moral particularism, which holds that the unique circumstances of a particular case must be carefully considered to determine the ethical choice in that case. Adler believed that moral laws could not be applied similarly to varied and unique individuals but that moral principles applied to all. He saw a need to balance essential general principles with consideration of the particular specific circumstances. He developed his own version of what he called Kant's "formula," which was, "Treat every [person] as a spiritual means to thine own spiritual end and conversely." He proposed a "supreme ethical rule," which he stated as follows: "So act as to elicit the unique personality in others, and thereby in thyself," or "Act so as to elicit the best in others and thereby in thyself." He thought by doing so, one would transcend both
egoism and
altruism. He believed that virtue is and must be its reward, or else it is not. He characterized a virtuous act as one "in which the ends of self and of the other are respected and promoted jointly," coordinating Kantian universalistic imperative ethics with a type of perfectionism. He took ethics seriously and felt it "must run like a golden thread through the whole of a [person's] life." He felt
consequentialism, particularly
utilitarianism, was inappropriate in ethics as it attempts to apply quantitative measures to something of a qualitative nature. Adler's social philosophy opposed
commercialism. He claimed, "The root disease that afflicts the world at the present day is the supremacy of the commercial point of view." His thought prized public works and the use of reason to develop ultimate ethical standards. Adler published such works as
Creed and Deed (1878),
Moral Instruction of Children (1892),
Life and Destiny (1905),
The Religion of Duty (1906),
Essentials of Spirituality (1908),
An Ethical Philosophy of Life (1918),
The Reconstruction of the Spiritual Ideal (1925), and
Our Part in this World. He made use of ideas from Judaism, as well as the philosophies of
Kant and
Ralph Waldo Emerson, mixed with specific
socialist ideas of his time. He believed that the concept of a
personal god was unnecessary and thought that the human personality was the central force of religion. He believed that different people's interpretations of religions were to be respected as religious in themselves. The
Ethical Culture movement was open to people of diverse beliefs. Ethical Culture societies were formed in the late nineteenth century in numerous cities in the United States, for instance, Philadelphia and St. Louis. == Works ==