William Whiston (1667-1752) was an Anglican priest, mathematician, theologian, and historian. This book is an account of the life and work of his younger friend Dr. Samuel Clarke (1675-1729), the famous philosopher, theologian, and friend of Sir Isaac Newton. It focuses on the controversy surrounding Clarke's book The Scripture Doctrine of the Trinity (1st ed. 1712), (the best edition is available here) and on Clarke's subscribing to the Articles of the Anglican faith, which Whiston believed that Clarke ought not in good conscience do.Two appendices consist of accounts of Clarke's life by two of his other friends, which Whiston undertakes to correct on certain points.