Context: Hume divided all of human knowledge into two categories: relations of ideas and matters of fact (see also Kant's analytic-synthetic distinction). Mathematical and logical propositions (e.g. "that the square of the hypotenuse is equal to the sum of the squares of the two sides") are examples of the first, while propositions involving some contingent observation of the world (e.g. "the sun rises in the East") are examples of the second. All of people's "ideas", in turn, are derived from their "impressions". For Hume, an "impression" corresponds roughly with what we call a sensation. To remember or to imagine such impressions is to have an "idea". Ideas are therefore the faint copies of sensations.

Question: What types of human knowledge did Hume say there are?
Answer: relations of ideas and matters of fact

Question: What type of human knowledge is math?
Answer: relations of ideas

Question: What type of human knowledge is observing the world?
Answer: matters of fact

Question: What type of human knowledge is "the sun rises in the East"?
Answer: matters of fact

Question: Where did Hume say people's ideas come from?
Answer: their "impressions"

Question: How many categories did Kant divide the world into?
Answer: Unanswerable

Question: What would the incorrect phrase "the sun rises in the west" be?
Answer: Unanswerable

Question: Why are sensations considered copies of ideas?
Answer: Unanswerable

Question: What was the analytic-synthetic distinction?
Answer: Unanswerable