First of all, you can make the argument that there's no such thing as the past. Nobody lived in the past.

My strong feeling is that we must learn more about how we learn. I'm convinced that we learn by struggling to find the solution to a problem on our own with some guidance, but getting in and getting our hands dirty and working it.

Find something to do that you love because then the work itself is always the reward not the recompense. And if you love what you're doing you probably do better at it than doing something you don't love and therefore you'll be compensated appropriately.

I don't pick my presidents because they were great presidents. I'm not much interested in ranking presidents and who is the best and who is the worst. I am much more inclined to be interested in them if they had an interesting life and if they were a complete person - and by that I mean they also had flaws and failings.

I can fairly be called an amateur because I do what I do, in the original sense of the word - for love, because I love it. On the other hand, I think that those of us who make our living writing history can also be called true professionals.

He had kept his head, kept his health and his strength, bearing up under a weight of work and worry that only a few could have carried.

I think the public library system is one of the most amazing American institutions. Free for everybody. If you ever get the blues about the status of American culture there are still more public libraries than there are McDonald's. During the worst of the Depression not one public library closed their doors.