A clause is a constituent that links a semantic predicand and a semantic predicate. A typical clause consists of a subject and a syntactic predicate, the latter typically a verb phrase, a verb with any objects and other modifiers.
The land of infinity is a land in which the oath never ends and is basically infinite. Here the main character meets a young boy that tells him the roads of infinity never meet. So in this you can find roads that never meet and a young boy.