You always want someone to hate in order to feel justified in your own misery. Hatred is the true primordial passion. It is love that's abnormal. That is why Christ was killed: he spoke against nature. You don't love someone for your whole life - that impossible hope is the source of adultery, matricide, betrayal of friends ... But you can hate someone for your whole life - provided he's always there to keep your hatred alive. Hatred warms the heart.

An idea you have might not be original. But by creating a novel out of that idea you can make it original.

Narrativity presumes a special taste for plot. And this taste for plot was always very present in the Anglo-Saxon countries and that explains their high quality of detective novels.

History is rich with adventurous men, long on charisma, with a highly developed instinct for their own interests, who have pursued personal power - bypassing parliaments and constitutions, distributing favours to their minions, and conflating their own desires with the interests of the community.

You must overcome any shyness and have a conversation with the librarian, because he can offer you reliable advice that will save you much time. You must consider that the librarian (if not overworked or neurotic) is happy when he can demonstrate two things: the quality of his memory and erudition and the richness of his library, especially if it is small. The more isolated and disregarded the library, the more the librarian is consumed with sorrow for its underestimation. A person who asks for help makes the librarian happy.

We are always remaking history. Our memory is always an interpretive reconstruction of the past, so is perspective.

The lunatic is all idée fixe, and whatever he comes across confirms his lunacy. You can tell him by the liberties he takes with common sense, by his flashes of inspiration, and by the fact that sooner or later he brings up the Templars.