“Recounting the experience of individuals brings home, as nothing else can, the sheer complexity of the choices they had to make, and the difficult and often opaque nature of the situations they confronted. Contemporaries could not see things as clearly as we can, with the gift of hindsight: they could not know in 1930 what was to come in 1933, they could not know in 1933 what was to come in 1939 or 1942 or 1945. If they had known, doubtless the choices they made would have been different. One of the greatest problems in writing history is to imagine oneself back in the world of the past, with all the doubts and uncertianties people faced in dealing with a future that for the historian has also become the past. Developments that seem inevitable in retrospect were by no means so at the time, and in writing this book I have tried to remind the reader repeatedly that things could easily have turned out very differently to the way they did at a number of points in the history of Germany in the second half of the nineteenth century and the first half of the twentieth. People make their own history, as Karl Marx once memorably observed, but not under conditions of their own choosing. These conditions included not only the historical context in which they lived, but also the way in which they thought, the assumptions they acted upon, and the principles and beliefs that informed their behavior. A central aim of this book is to re-create all these things for a modern readership, and to remind readers that, to quote another well-known aphorism about history, 'the past is a foreign country: they do things differently there.”

“Let that be a reminder to you that the past is one thing, but what we make of it, the conclusions we draw, is another. History can be many things, depending on how we read it, just as the future can be many things, depending on how we live it. There is no inevitability to any historical occurrence, only what people will allow to take place. And it is by dreaming first that we get to new realities.”

“When I was in school I studied biology. I learned that in making their experiments scientists will take some group--bacteria, mice, people--and subject that group to certain conditions. They compare the results with a second group which has not been disturbed. This second group is called the control group. It is the control group which enables the scientist gauge the effect of his experiment. To judge the significance of what has occurred. In history there are no control groups. There is no one to tell us what might have been. We weep over the might have been, but there is no might have been. There never was. It is supposed to be true that those who o not know history are condemned to repeat it. I don't believe knowing can save us. What is constant in history is greed and foolishness and a love of blood and this is a thing that even God--who knows all that can be known--seems powerless to change.”

“Today, I will try to remember to regret the past. I will think of how many mistakes I have made throughout my life. I will say to myself, 'If only I could go back in time and make different choices, so that my life could be the way it should have been.' Then I will remind myself that I cannot.”

“Life and study have persuaded me of the openness of history. There is no inevitability in history. Thinking about what might have happened, what could have happened, is a necessary element in trying to understand what did happen. And if, as I believe, individual acts of decency and courage make a difference, then they need to be recorded and remembered.”

“Among the many worlds which man did not receive as a gift of nature, but which he created with his own mind, the world of books is the greatest. Every child, scrawling his first letters on his slate and attempting to read for the first time, in so doing, enters an artificial and complicated world; to know the laws and rules of this world completely and to practice them perfectly, no single human life is long enough. Without words, without writing, and without books there would be no history, there could be no concept of humanity. And if anyone wants to try to enclose in a small space in a single house or single room, the history of the human spirit and to make it his own, he can only do this in the form of a collection of books.”