These all sound literary, but they are correct. I believe it's usually for emphasis.
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AnonymousOr it's just the speaker's preference to use them?In the example sentences the author was deliberately attempting to achieve a particular mood or tone with his odd word order. Native speakers never use such formulations in everyday life and as a learner you definitely don't need or want to attempt to duplicate it.
CliveYoda you could learn to talk like.If like Yoda I talk, well will I speak, wise will I sound.