‘Knowledge, belief and faith’ explores the link that Locke believed existed between knowledge, faith and morality. Locke thought that knowledge consisted of the union of the simple ideas of the senses to form complex ideas. Whilst it was impossible to truly know nature, it was possible to know moral ideas because no gap existed between their ‘nominal essence’ and their ‘real essence’. This gave humans moral agency. For Locke, morality depended on the existence of God, whose existence could be known through faith. Thus it was possible for men to know and to follow natural law.