What are the primary and secondary qualities, according to the concept of natural law?

The concept of primary and secondary qualities originates from philosophers like John Locke, who distinguished between two types of properties that objects possess. Primary qualities are those that exist independently of any observer, such as solidity, extension, motion, and number. They are objective and can be measured or observed. Secondary qualities, on the other hand, are dependent on the observer's perception and include properties like color, taste, and sound. They arise from the interaction of primary qualities with our sensory apparatus and are subjective experiences.

The choice indicating that they specify relationships between observable properties and behavior accurately captures this distinction. Primary qualities provide the measurable, objective data about an object, while secondary qualities arise from how these primary qualities are perceived and experienced by individuals. This means that the interactions between these qualities inform our understanding of behavior and perception, making them fundamentally important in the context of natural law and the study of psychology.