Thomas Carlyle (4 December 1795 – 5 February 1881) was a Scottish philosopher, satirical writer, essayist, translator, historian, mathematician, and teacher. Considered one of the most important social commentators of his time, he presented many lectures during his lifetime with certain acclaim in the Victorian era. One of those conferences resulted in his famous work On Heroes, Hero-Worship, and The Heroic in History where he explains that the key role in history lies in the actions of the "Great Man", claiming that "the history of the world is but the biography of great men".
You may find more from Thomas Carlyle on Wikiquote
The paths by which people journey toward happiness lie in part through the world about them and in part through the experience of their souls. On the one hand, there is the happiness which comes from wealth, honor, the enjoyment of life, from health, culture, science, or art; and, on the other hand, there is the happiness which is to be found in a good conscience, in virtue, work, philanthropy, religion, devotion to great ideas and great deeds.