There's a disciplined erotic component to it, so that the height of sexual contact is the embrace, the modest touch, a relatively chaste kiss. An important passage from the surviving 1942 diary (one I quote in the book) relates this mode of sexual expression to his own life. Mann had returned to his diary for 1927 (one of those he burned) and to his parting from the young man, Klaus Heuser, whom the family had met on holiday and invited to Munich.

I take the ethical truths to be the stable elements that emerge out of ethical progress and that are retained under further ethical progress.

I'm quite pessimistic about climate change. This is an urgent problem, and much of the world is only now waking up to the easiest part of solving - the realization that anthropogenic global warming is real.

Many of the greatest works of philosophy seem to me to be valuable not because of their arguments, but because they offer us perspectives that open up new possibilities. They show us how we might start in different places, and not buy into the assumptions tacitly made on the first pages of the philosophical works that have influenced us.

The "little theme" from Vinteuil, heard by Swann as emblematic of his love for Odette, remains a point of reference for him, as the character of that love changes and as the love eventually fades.

After two years of undergraduate study, it was clear that I was bored by the regime of problem-solving required by the Cambridge mathematical tripos. A very sensitive mathematics don recommended that I talk to the historian of astronomy, Michael Hoskin, and the conversation led me to enroll in the History and Philosophy of Science for my final undergraduate year.

In the end, we learn about the most basic philosophical questions - like "How to live?" - from a broad mixture of sources, including literature and philosophy, history and anthropology. These sources can guide our reflections on our own experiences, as we explore and reconsider. Mann contributed to such explorations in a distinctive way, and I hope my book brings that out.