History is a set of repeating circles, like the tide. The wind does blow through the ruins of tomorrow. But it is more a question of two steps forward, one step back. Humans and dragons make the same mistakes, again and again, but things do get better over time

In the distant future I see open fields for far more important researches. Psychology will be based on a new foundation, that of the necessary acquirement of each mental power and capacity by gradation. Light will be thrown on the origin of man and his history.

The creators of the Constitution were not purple-robed scholars, sitting in their ivory towers attempting to put abstract theories into play, but men who had come to realize that their system of government was broken. These men desired desperately to repair it.

It is the glory of London that it is always ending and beginning anew, and that a visitor, with a good eye and indefatigable feet, will find in her travels all the Londons she has ever met in the pages of books, one atop the other, like the strata of the Earth.

These handkerchief gardens are a traditional German solution to apartment dwellers' yearning for a tool shed and a vegetable garden. They make a patchwork of green in odd corners of urban land, along train lines or canals or, as here, in the lee of the Wall.

Now if a man thus favoured died as he has lived, he will be just the one you are looking for: the only sort of person who deserves to be called happy. But mark this: until he is dead, keep the word "happy" in reserve. Till then, he is not happy, but only lucky...

I thought about how stupid it is, that all of us are born destined to desire somebody else, though desire brings with it such disappointment and pain. Humankind's history must be scored bloody with heartbreak. This hankering for affection is a blight upon us.

Oh, my dear Vimes, history changes all the time. It is constantly being re-examined and re-evaluated, otherwise how would we be able to keep historians occupied? We can't possibly allow people with their sort of minds to walk around with time on their hands.

Manuscript editions didn't immediately die out with the printing explosion that burst across Europe in the 1460s and 1470s. Manuscripts continued to be produced into the 16th century, many decades after presses had spread to most minor cities in Western Europe.

It appeared clear to me - partly because of the lies that filled my history textbooks - that the intent of formal education was to inculcate obedience to a social order that did not deserve my loyalty. Defiance seemed the only dignified response to the adult world.

Stone should last forever, but on that night I came to understand that a stone was only another form of dust. Streams of holy dust loomed in the air, and every breath included remnants of the Temple, so that we inhaled that which was meant to stand through eternity.

Patricia embraces me on the station platform. 'The past is what you leave behind in life, Ruby,' she says with the smile of a reincarnated lama. 'Nonsense, Patricia,' I tell her as I climb on board my train. 'The past's what you take with you.

Time and times are but cogwheels, unmatched, grinding on oblivious to one another. Occasionally - oh, very rarely! - the cogs fit; the pieces of the plot snap together momentarily and give men faint glimpses beyond the veil of this everyday blindness we call reality.

I know it is the fashion to say that most of recorded history is lies anyway. I am willing to believe that history is for the most part inaccurate and biased, but what is peculiar to our own age is the abandonment of the idea that history could be truthfully written.

There was so much about our past that I still didn't understand, and I wasn't one to tell the future. I could only tell the way the world worked. History was a tangled thing, people were resilient, and the one constant law of the world was that it would heal.