In this second volume, Piper also developed a conception of human agency, based on a foundation of logical consistency as literal self-preservation, which explains how reason can be motivationally effective in the absence of desire, and why it so rarely is in practice.
Piper also developed a conception of human agency. This was based on a foundation of logical consistency as literal self-preservation. This was in this second volume. How reason can be motivationally effective in the absence of desire, and why it so rarely is in practice. This is what Preservation explains.