Franklin Warren Sears was born in Illinois in 1863, coming of age during a period of intense public fascination with the emerging sciences of the mind. Writing at the turn of the twentieth century, when psychology was transitioning from philosophical speculation into a recognized field of scientific inquiry, Sears positioned himself at the intersection of practical self-improvement and the theoretical frameworks then reshaping how educated readers understood human consciousness. His work reflects deep familiarity with both the mentological traditions popular among self-culture movements of the era and the more rigorous psychological literature developing in academic circles. Concentration: Its Mentology and Psychology demonstrates a disciplined effort to bridge these two worlds, offering readers not merely motivational guidance but a structured examination of how focused mental effort operates at a fundamental level. Sears wrote for readers who wanted more than surface-level advice, those curious about the mechanics underlying willpower, attention, and directed thought. His grounding in the intellectual currents of his time gave him the tools to address concentration as a subject worthy of serious analysis rather than simple instruction. For anyone exploring the history of mental science or seeking foundational perspectives on the cultivated mind, Sears remains a thoughtful and rewarding guide.