This chapter examines the views of seventeenth-century British philosophers on passions and affections. It explains that about 8,000 books published during this period mentioned passion and that it started with Thomas Wright's Passions of the Mind in General. The chapter also explores the intellectual basis of the writers who wrote about passion – which includes Augustinianism, Aristotelianism, stoicism, Epicureanism, and medicine – and furthermore, analyzes the relevant works of Francis Bacon, Thomas Hobbes, Henry More, and Lord Shaftesbury.