Hume's empiricism is the philosophical view that all knowledge comes from sensory experience. He believed that our minds are blank slates at birth (tabula rasa) and that all our ideas are derived from impressions.

Hume's skepticism challenges the idea of certain knowledge. He questioned the validity of induction, causation, and even the concept of a persistent self. He argued that we can't be certain about anything beyond our immediate experience.

Hume argued that we don't directly experience cause and effect. We only observe constant conjunction (things happening together regularly). We infer causation based on habit and custom, not logical necessity.

The problem of induction questions the justification for inferring general laws from specific observations. Hume argued that there's no rational basis for believing that the future will resemble the past, even if it has done so consistently.

Impressions are vivid and lively perceptions derived directly from sensory experience. Ideas are faint copies of impressions, arising from memory or imagination. Hume believed that all ideas are ultimately derived from impressions.

Hume denied the existence of a permanent, unchanging self. He argued that the self is merely a bundle or collection of different perceptions that succeed each other rapidly and are in perpetual flux and movement.

Hume's naturalism rejects supernatural explanations and emphasizes the importance of understanding human nature and behavior in terms of natural causes and principles. He sought to apply the scientific method to the study of human nature.

Hume believed that moral judgments are based on feelings or sentiments, not reason. He argued that our moral approval or disapproval of actions is rooted in our emotional responses, such as sympathy and empathy.

Hume believed that reason is the slave of the passions. He argued that reason alone cannot motivate us to act; it can only inform us about the means to achieve our desires, which are ultimately driven by emotions and sentiments.