本文基於今日不受歡迎的理論，即十字軍與軍事修會不是完全負面的、壞的。首先，文章評論批評十字軍的各種說法，證明此批評常不符合事實，然後文章說明十字軍與軍事修會如何保護歐洲。最後，結論更廣放地討論安全問題。

　　　　　This paper is written with the unpopular belief that the crusades and Military Orders were not all bad. It opens with possible reasons for condemning the crusades, showing how much criticism is based on a failure to understand the real motive for these military endeavours. It then looks at what role the crusades played in protecting Europe from the Muslim armies and concludes with remarks on the nature of security.