And that, my friend, is how the world ends. On the edge of a precipice, with one foot over the edge, it stops, turns and goes back, leaving an empty earth of birds and insects, wind, rain and rusting weapons.

As Einstein himself pointed out. He said we’re like people in a boat without oars drifting along a winding river. Around us we see only the present. We can’t see the past, back in the bends and curves behind us. But it’s there.

Maybe I live in what is for me the wrong time.

It may be that the strongest instinct of the human race, stronger than sex or hunger, is curiosity: the absolute need to know. It can and often does motivate a lifetime, it kills more than cats, and the prospect of satisfying it can be the most exciting of emotions.

When you've heard one bagpipe tune, you've heard them both.