Astronauts have been stuck in low-Earth orbit, boldly going nowhere. American attempts to kick-start a new phase of lunar exploration have stalled amid the realisation that NASA's budget is too small for the job.

When I was a student, the laws of physics were regarded as completely off limits. The job of the scientist, we were told, is to discover the laws and apply them, not inquire into their provenance.

No planet is more earth-like than Earth itself, so if life really does pop up readily in earth-like conditions, then surely it should have arisen many times right here on our home planet? And how do we know it didn't? The truth is, nobody has looked.

Should we find a second form of life right here on our doorstep, we could be confident that life is a truly cosmic phenomenon. If so, there may well be sentient beings somewhere in the galaxy wondering, as do we, if they are not alone in the universe.

The residue of religion in my work appears as a modified transcendentalism, and the positivist scientific side of my thought appears as concreteness and realism. The effort to reconcile the two is at the core of all my poetry.

Once you have the pattern of life of this person, the choreography, so to speak, you have the canvas that you present eight times a week, not without feeling underneath it, but it's not as churning as the discovery process was.

When you've got African parents, you go to uni, do finance, and go into accounting. But I'm not good with systems. I dropped out in my final year of college to become a Christian poet. Then went back to do my A-levels and went to uni in Birmingham to do political science and theology. I lasted 12 weeks.

By a combination of formal training and self study, the latter continuing systematically well into the 1940s, I was able to gain a broad base of knowledge in economics and political science, together with reasonable skills in advanced mathematics, symbolic logic, and mathematical statistics.