This book is a sequel to my History of English Thought in the Eighteenth Century. The title which I then ventured to use was more comprehensive than the work itself deserved: I felt my inability to write a continuation which should at all correspond to a similar title for the nineteenth century. I thought, however, that by writing an account of the compact and energetic school of English Utilitarians I could throw some light both upon them and their contemporaries. I had the advantage for this purpose of having been myself a disciple of the school during its last period. Many accidents have delayed my completion of the task; and delayed also its publication after it was written. Two books have been published since that time, which partly cover the same ground; and I must be content with referring my readers to them for further information. They are The English Radicals, by Mr. C. B. Roylance Kent; and English Political Philosophy from Hobbes to Maine, by Professor Graham.