The person wonders if there is a point when humans know everything, or if there is a point where humans are too full of knowledge to learn anything else.
The literary device being used in the sentence in personification because its saying "the roar of crickets" giving it an effect of so called "roaring" which crickets dont do.
Another definition of personification is "The flood raged over the entire village." as raging is more of a human feature but, if its not right let me know the rest of the sentence
The answer is Sound. You can hear sound in a stage production (Also known as a play) but you cannot read sound. It doesn't "appear" in a novel or book. Novels use expression and descriptive words, while stage productions use tone and sound.
- The Artemis Wolf
The sun came crashing down on to the beach.
Linking verbs don't show action but action verbs do hence the name action verbs