Complex sentence: One of them, "Phun-Abiriel", is dismayed, because he is eager to create on his own, but unlike God, his thoughts do not take shape-in the process, he also wishes to see God, but can't.
Split into simpler sentences: One of them, "Phun-Abiriel", is dismayed, because he is eager to create on his own, but unlike God, his thoughts do not take shape. In the process, he also wishes to see God, but can't.