@@SihamKhelifa-xi8ps Chomsky considered that sentences can be infinite due to the concept of recursion in language. Recursion allows for the embedding of clauses within clauses, meaning you can create complex sentences by adding additional phrases or clauses indefinitely. For example, you can have a simple sentence and then add more information, such as "The cat that chased the mouse that stole the cheese is sleeping." This ability to nest clauses creates the potential for an infinite number of sentences, as you can keep adding layers of information without a fixed limit. This idea is a fundamental aspect of his theory of generative grammar, which emphasizes the creative capacity of human language.