“Why are these historical observations interesting?...they suggest that we should be careful about attributing our distinction between philosophy and science to earlier thinkers…The examples I have given do raise an interesting question: Why is it that we tend to see such a radical break between philosophy and science, and, more important, should we? The question can be raised directly, without the need for history, as Quine has done. But history brings the point home in an especially clear way: It shows us an assumption we take for granted by pointing out that it is not an assumption everyone makes.”

“Philosophy ought to question the basic assumptions of the age. Thinking through, critically and carefully, what most of us take for granted is, I believe, the chief task of philosophy, and the task that makes philosophy a worthwhile activity.”

“If others tell us something we make assumptions, and if they don't tell us something we make assumptions to fulfill our need to know and to replace the need to communicate. Even if we hear something and we don't understand we make assumptions about what it means and then believe the assumptions. We make all sorts of assumptions because we don't have the courage to ask questions.”

“The history of science, like the history of all human ideas, is a history of irresponsible dreams, of obstinacy, and of error. But science is one of the very few human activities — perhaps the only one — in which errors are systematically criticized and fairly often, in time, corrected. This is why we can say that, in science, we often learn from our mistakes, and why we can speak clearly and sensibly about making progress there.”

“Beyond all sciences, philosophies, theologies, and histories, a child's relentless inquiry is truly all it takes to remind us that we don't know as much as we think we know.”

“If we cannot agree on what was important yesterday, what more on events that happened a hundred or three hundred years ago? The point here is that history is open ended and we cannot be sure about the past. So why study history? Because it teaches us to see the connections between events. Knowing how and why a certain event happened is helpful because in many cases people separated by time and place can sometimes be in similar situations. They can be mentally contemporaneous without knowing it. History gives us hindsight.”