These three rules set stringent constraints upon methodology. While the rule of time lets psychological processes share common ground with nonequilibrium thermodynamics (Prigogine 1977), the rule of open systems guarantees unity or psychology with all biological systems. Finally, the rule of goal orientations outlines the specifically human aspect of the psychological processes that involve constant preadaptation by the person toward the not-yet-knowable future. It is here where imagination, affect, and reasoning converge. The chapter includes discussions of the meaning of the data.