Chapter XXIII reminds me of the Temperance card in the Tarot, which teaches us to do all things in moderation – including moderation. I also think the last paragraph is interesting: It seems in a lot of this text that Lao Tzu often switches up the points he is trying to make. And here there is some symmetry, but not really at the same time.
Know the male,
yet keep to the female:
receive the world in your arms.
If you receive the world,
the Tao will never leave you
and you will be like a little child.
Know the white,
yet keep to the black:
be a pattern for the world.
If you are a pattern for the world,
the Tao will be strong inside you
and there will be nothing you can’t do.
Know the personal,
yet keep to the impersonal:
accept the world as it is.
If you accept the world,
the Tao will be luminous inside you
and you will return to your primal self.
The world is formed from the void,
like utensils from a block of wood.
The Master knows the utensils,
yet keeps to the the block:
thus she can use all things.