Hume- on definition and opinion

Hume discusses liberty and necessity in Chapter 8 and says that people define things differently and interpret them based on their own definition. If people were to define things the same exact way, then their opinions would be exactly the same. But, as human beings we are all given our own individual brains to think our own individual thoughts. Conflicts occur when people have different opinions, or views on certain things due to differences in opinions. Without differences in interpretations, there would be no conflict, no debates, and no open minded thinking. Therefore, philosophy would be unheard of because there would no opposition to certain matters.