You need another comma after the word "think" because it's a parenthetical expression and is set off from the sentence.
After searching the excerpt and understading, We can come to the conclusion that Carson is clearly speaking about the creation of individual identity and the need to belong. Yet, he places two opposing feeling In the excerpt, from the text, "Solitude ... an American Malaria", love and fear. The writer shows how these feelings works and their effects. Love can motivate, a fear is something that would destroy love.
