After sleeping through a hundred million centuries we have finally opened our eyes on a sumptuous planet, sparkling with colour, bountiful with life. Within decades we must close our eyes again. Isn’t it a noble, an enlightened way of spending our brief time in the sun, to work at understanding the universe and how we have come to wake up in it? This is how I answer when I am asked — as I am surprisingly often — why I bother to get up in the mornings. To put it the other way round, isn’t it sad to go to your grave without ever wondering why you were born? Who, with such a thought, would not spring from bed, eager to resume discovering the world and rejoicing to be a part of it?

It is no accident that we see green almost wherever we look. It is no accident that we find ourselves perched on one tiny twig in the midst of a blossoming and flourishing tree of life; no accident that we are surrounded by millions of other species, eating, growing, rotting, swimming, walking, flying, burrowing, stalking, chasing, fleeing, outpacing, outwitting. Without green plants to outnumber us at least ten to one there would be no energy to power us. Without the ever-escalating arms races between predators and prey, parasites and hosts, without Darwin’s ‘war of nature’, without his ‘famine and death’ there would be no nervous systems capable of seeing anything at all, let alone of appreciating and understanding it. We are surrounded by endless forms, most beautiful and most wonderful, and it is no accident, but the direct consequence of evolution by non-random natural selection – the only game in town, the greatest show on Earth.

Thus, from the war of nature, from famine and death, the most exalted object which we are capable of conceiving, namely, the production of the higher animals, directly follows. There is grandeur in this view of life, with its several powers, having been originally breathed into a few forms or into one; and that, whilst this planet has gone circling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being evolved.

We are the offspring of history, and must establish our own paths in this most diverse and interesting of conceivable universes - one indifferent to our suffering, and therefore offering us maximum freedom to thrive, or to fail, in our own chosen way.

The kingdom of heaven promised us certain things: it promised us happiness and a sense of purpose and a sense of having a place in the universe, of having a role and a destiny that were noble and splendid; and so we were connected to things. We were not alienated. But now that, for me anyway, the King is dead, I find that I still need these things that heaven promised, and I’m not willing to live without them. I don’t think I will continue to live after I’m dead, so if I am to achieve these things I must try to bring them about – and encourage other people to bring them about – on earth, in a republic in which we are all free and equal – and responsible – citizens.

Now, what does this involve? It involves all the best qualities of things. We mustn’t shut anything out. If the Church has told us, for example, that forgiving our enemies is good, and if that seems to be a good thing to do, we must do it. If, on the other hand, those who struggled against the Church have shown us that free enquiry and unfettered scientific exploration is good – and I believe that they have – then we must hold this up as a good as well.

Whatever we can find that we feel to be good – and not just feel but can see with the accumulated wisdom that we have as we grow up, and read about history and learn from our own experiences and so on – wherever they come from, and whoever taught them in the first place, let’s use them and do whatever we can do to make the world a little bit better.

He meant the Kingdom was over, the Kingdom of Heaven, it was all finished. We shouldn’t live as if it mattered more than this life in this world, because where we are is always the most important place…. We have to be all those difficult things like cheerful and kind and curious and patient, and we’ve got to study and think and work hard, all of us, in all our different world, and they we’ll build… The Republic of Heaven.

What work do I have to do then?” said Will, but went on at once, “No, on second thought, don’t tell me. I shall decide what I do. If you say my work is fighting, or healing, or exploring, or whatever you might say, I’ll always be thinking about it. And if I do end up doing that, I’ll be resentful because it’ll feel as if I didn’t have a choice, and if I don’t do it, I’ll feel guilty because I should. Whatever I do, I will choose it, no one else.

Maybe sometimes we don’t do the right thing because the wrong thing looks more dangerous, and we don’t want to look scared, so we go and do the wrong thing just because it’s dangerous. We’re more concerned with not looking scared than with judging right.

If you can approach the world’s complexities, both its glories and its horrors, with an attitude of humble curiosity, acknowledging that however deeply you have seen, you have only just scratched the surface, you will find worlds within worlds, beauties you could not heretofore imagine, and your own mundane preoccupations will shrink to proper size, not all that important in the greater scheme of things. Keeping that awestruck vision of the world ready to hand while dealing with the demands of daily living is no easy exercise, but it is definitely worth the effort, for if you can stay centered, and engaged, you will find the hard choices easier, the right words will come to you when you need them, and you will indeed be a better person. That, I propose, is the secret to spirituality, and it has nothing at all to do with believing in an immortal soul, or in anything supernatural.

You have a specific responsibility to existence, to God if you like, to taste, touch, and smell what there is to experience. You have to do everything. If given an option between doing something and not doing it, you have to do it; because you’ve already done the “not do it” part.