Our life changes moment by moment, it flows by swiftly day by day. Everything is impermanent and changing rapidly. This is the reality before our eyes. You do not need to wait for the teaching of masters or scriptures to see it. In every moment, do not expect tomorrow will come. Think only of this day and this moment. Since the future is very much uncertain, and you cannot foresee what will happen, you should resolve to act so as to bring benefit to all living beings.

- Zen Master Dogen (1200-1253)