Thoughts on Public Prayer, authored by Samuel Miller, is a comprehensive treatise on the nature, history, and importance of public prayer, particularly within the Presbyterian tradition. Addressed to younger ministers and candidates for ministry, it explores the biblical foundations and historical practices of public prayer, contrasts extemporaneous prayer with liturgical forms, and emphasizes the need for both spiritual fervor and cultivated skill in leading congregational prayer. Miller argues that excellence in public prayer is vital for effective ministry and should be pursued with diligence, study, and reliance on the Holy Spirit.