This insightful work contains an abstract of the lives and philosophies of some of those personalities who have stood highest in the ranks of free thinkers in all nations and all ages. The writer has put forward ample factual information in a simple way through this work. A must-read for students of literature, philosophy, and history. Content includes: Thomas Hobbes Lord Bolingbroke Condorcet Spinoza Anthony Collins Des Cartes M. De Voltaire John Toland Compte De Volney Charles Blount Percy Bysshe Shelley Claud Arian Helvetius Frances W. D'arusmont Epicurus Zeno, the Stoic Matthew Tindal David Hume Dr. Thomas Burnet Thomas Paine Baptiste De Mirabaud Baron D'holbach Robert Taylor Joseph Barker