One needs to understand cycles to understand Tao.
Days and nights, summers and winters.
Waves curling up, consumed by new waves.
The ongoing march of generations,
The vapor of water congealing into clouds –
Tao is cyclical, not linear.
The multitude of things are innumerable,
But they travel circularly.
Those who accord with Tao
Understand rise and fall
And gain clarity and insight.
Those who do not accept rise and fall,
Ride recklessly with misfortune.
Thus it is said: the secret of Tao lies in returning.
Deng Ming-Dao, Everyday Dao p81