Theodore Parker (1810-1860)—an American Unitarian clergyman and social reformer who promoted the antislavery cause.Prabhupada ›Glossary›-T-›Theodore Parker Theodore Parker (1810-1860)-an American Unitarian clergyman and social reformer who promoted the antislavery cause. Link to this page: https://prabhupadabooks.com/glossary/t/theodore-parker-1810-1860-an-american-unitarian-clergyman-an Previous: Thali-vegetarian meal which includes many different preparations, usually all you can eat; a low-rimmed metal plate. Next: Tika-a commentary.