HUME
1.  What is the distinction between impressions and ideas?
2.  What is the Principle of the Priority of Impressions and why does Hume provide a counter-example to it?  What is that counter-example?
3.  What are the two objects of knowledge, or ways of knowing, according to Hume?
4.  Why are inferences about the future neither relations of ideas nor matters of fact?
5.  What are Hume's definitions of 'cause'?
6.  What is the difference between 'constant conjunction' and 'necessary connection'?  What does the term 'custom and habit' have to do with these concepts?