"The wise man regulates his conduct by the theories both of religion and science. But he regards these theories not as statements of ultimate fact but as art-forms"

In this quote, John B. S. Haldane recommends that a sensible individual utilizes both spiritual and clinical theories to direct their behavior. However, they do not view these theories as absolute facts, however rather as kinds of art. This implies that the smart person understands the restrictions and subjectivity of both religious beliefs and science, and instead uses them as tools to shape their conduct. They are able to critically evaluate and interpret these theories, recognizing that they are not foolproof however rather available to analysis. By doing so, the smart person is able to navigate their actions in a well balanced and thoughtful way, including both faith and factor.