Longer periods away from home always make me think about time and our experience of it.

Time is the stuff of music: music manipulates our experience of time; it plays with the rhythm of experience; it stretches and complicates our relationship to the passing of time. If the world of physics is a space-time continuum, music is a pitch-time continuum.

Here is Daniel Barenboim:

"Since every note produced by a human being has a human quality, there is a feeling of death with the end of each one, and through that experience there is a transcendence of all the emotions that these notes can have in their short lives; in a way, one is in direct contact with timelessness."

Recently, Rory Stewart:

Without music, time has a very different quality.

Freeman Dyson:

It's very important that we adapt to the world on the long-time scale as well as the short-time scale. Ethics are the art of doing that. You must have principles that you're willing to die for.