Roger Scruton did not believe that photographs are works of art. I explain why he thinks this, and offer some other perspectives.

Freedom ends where someone else's begins. This blog explores the limits of freedom of expression and the impact it has on others.

Quine believed that de re modality created an 'invidious distinction' by flouting extensionality, of which Quine was an advocate

The endeavour of discovery is a pure joy. Here are six non-fiction books that have captured my imagination and that I would recommend to anyone on a mission of lifelong learning.

Śūnyatā, the Doctrine of Emptiness, is a tenet of Mahāyāna Buddhism - yet it is still one of the most widely misunderstood concepts.

How can we have such a vivid perceptual experience? Integrated Information is the degree to which different parts of a system are aware of each other.

You can point at sheep, you can point at restaurants - but not at numbers. What makes maths real - if anything?

Last month, I attended a talk as part of the excellent Federation Presents series. This one invited Sara Wachter-Boettcher, author of Technically Wrong, as a keynote speaker for a talk entitled 'Toxic Tech'.

100 years ago, there were only 4 countries in the world where you could expect to live past 50. Today, you can expect to live past 50 in every country in the world.

David Lewis is my hero. I also disagree emphatically with almost everything he says, and think his philosophy is ludicrous.

Anything follows from a contradiction. A moon made of cheese. Five-sided triangles. Decapod felines. Time flowing backwards. A non-existent universe.