Most of the intelligence out there must be artificial intelligence. We keep looking for critters like us living on a planet like ours, where in fact the majority of the intelligence out there is not biological. That would be my argument.

In archaeology, context is the basis of many discoveries that are imputed to the deliberate workings of intelligence. If I find a rock chipped in such a way as to give it a sharp edge, and the discovery is made in a cave, I am seduced into ascribing this to tool use by distant, fetid and furry ancestors.

Our brains are continuing to evolve, and perhaps a few tens of thousands of years from now, our descendants will walk around with five pound brains, allowing them insights that we can't imagine.

While it may be disappointing, I have to confess to people who ask for my insights on the meaning of it all that astronomy doesn't provide any clearly useful data on matters of sin and souls.

Critics of American colleges typically attribute the failings of undergraduate education to a tendency on the part of professors to neglect their teaching to concentrate on research. In fact, the evidence does not support this thesis, except perhaps in major research universities.

The poker player learns that sometimes both science and common sense are wrong; that the bumblebee can fly; that, perhaps, one should never trust an expert; that there are more things in Heaven and Earth than are dreamt of by those with an academic bent.

It's wonderful to see more of my colleagues recognizing the importance of investing in STEM education and scientific research and development.

Once a discovery has been published, there is no way of un-publishing it.