How to Use "existentialist" with Example Sentences

1. Or as existentialist jean-paul sartre called him , " the most complete human being of our age " ?
2. As defined from an existentialist perspective , our lives are defined by the choices we make .
3. From the existentialist perspective as defined by the theologian , paul tillich , the issue is one of courage .
4. The us president , who included the existentialist albert camus on his summer reading list , has also shown a particularly french trait in glorifying theory over practice .