"All things are in flux;
the flux is subject to a
unifying measure or rational principle.
This principle (logos,
the hidden harmony behind all change)
bound opposites together in a unified tension,
which is like that of a lyre,
where a stable harmonious sound
emerges from the tension of the
opposing forces that arise from the
bow bound together by the string.
...
The living and the dead,
The awake and the sleeping,
The young and the old are all one and the same.
When the ones change, they become the others.
When those shift again, they become these again.
...
God is day and night.
God is winter and summer.
God is war and peace.
God is fertility and famine.
He transforms into many things.
...
Day and night are one.
Goodness and badness are one.
The beginning and the end of a circle are one."
- Heraclitus (c.535 - c.475 BC)