is it correct the phrase "It's only light that creates shadow"?

Question

and what do you mean with that?

Answer 1

It depends whether you are taking this sentence literally or not. Taken literally, it simply means that you will not have a shadow if there is no light. You stand in front of the light, thus casting a shadow behind you where the light cannot penetrate your body.

Answer 2

This sounds like a poetic quote so the sentence fits the flow of poetry. (I hope that's what you're using this for)
You could go with the first answer...
"It's only light that creates A shadow"
OR
"It's only light that creates shadowS"

I would prefer saying it this way:
"Light, alone, creates a shadow" or "shadows"

Answer 3

You forgot one letter in the phrase. It should have read, "It's only light that creates A shadow", except it should be a small "a".

Answer 4

It's a way of blaming light for the absence of light in a shadow. Or, more globally put, it's like blaming someone or something for NOT being someone or something. Sounds kinda dumb to me. God Bless you.

Answer 5

It looks correct to me; if there's no light, there's no way to see a shadow.