A contrast with the inter-subjective element in hegel"s conception of truth. Knowledge about other minds comes into play in this concept of truth but the concern is with knowledge of reality. Knowledge about content of other minds is a concern for hegel only indirectly. Simmel is concerned with inter-personal truth; the truth we share with each other. Comparison of persons with other objects of knowledge. Both kinds of truth (knowledge of mind and reality) are necessary for. Both kinds of truths are typically concerned with quality of objects rather progress in life. people. Neither is absolute in the sense of being complete. While nature can conceal itself, it never lies to us. Unlike other objects, people modify their behaviour because they know others are interacting with them. Simmel derives that our knowledge of each other is largely true because of how well we get along with each other.