Final answer:
The words found after his death were written by Blaise Pascal, reflecting his personal Christian faith, contrasting with other philosophers' views on religion.
Step-by-step explanation:
After his death, Blaise Pascal, the French mathematician and philosopher, was found to have a piece of paper with a profound declaration of faith sewn into the lining of his coat. The words - "God of Abraham, God of Isaac, God of Jacob, not of philosophers and scholars. Certainty, certainty, heartfelt joy, peace. God of Jesus Christ. God of Jesus Christ." - are part of his celebrated Mémorial, a document that captures a mystical experience that deeply influenced his faith and philosophical writings, notably the Pragmatic Argument for the Existence of God or Pascal's Wager.
While other philosophers mentioned, like Nietzsche and Kierkegaard, were deeply engaged in religious discourse, the personal nature of this declaration, and its specific Christian context, aligns with Pascal's spiritual concerns and theological inquiries. Pascal's wager infers that it is a safer bet to believe in God, as the potential gains outweigh the potential losses. This reflection on faith starkly differs from Nietzsche's skepticism and atheistic philosophy. Therefore, the correct answer to the question is Option 1: Blaise Pascal.