The philosophers talk across the centuries exclusively to one another, hermetically sealed from any influences derived from non-philosophical discourse.

One of the interesting things about the ancient Greeks is that they really didn't have our conception of individual rights. They didn't have our conception of all lives matters. And it was really was true for them, that certain lives matter a lot more than others. It didn't dawn on them that all lives, although different, can be lives of equal mattering. And that is actually something a huge ethical lesson.

I was trained as a philosopher never to put philosophers and their ideas into historical contexts, since historical context has nothing to do with the validity of the philosopher's positions. I agree that assessing validity and contextualizing historically are two entirely distinct matters and not to be confused with one another. And yet that firm distinction doesn't lead me to endorse the usual way in which history of philosophy is presented.

One of the peculiar features of philosophical questions is how eager people are to offer solutions that miss the point of the questions. Sometimes these failed solutions are scientific, and sometimes they are religious, and sometimes they are based on what is called plain common sense.

One doesn't diminish a philosopher's achievement, and doesn't undermine its soundness, by showing how the particular set of questions on which he focused, the orientation he brought to bear on his focus, has some causal connection to the circumstances of his life.

Plato's concern is not just an intellectual issue, but it is knitted with emotional life as well.

Philosophical thinking that doesn't do violence to one's settled mind is no philosophical thinking at all.