Tesis ini membahas perbedaan pemikiran dan sikap politik Natsir berhadapan dengan Isa Anshary tentang negara yang berlandaskan Pancasila versus Islam. Perbedaan ini disebabkan oleh pengaruh lingkungan dan pengalaman politik keduanya yang berbeda. Penelitian ini menemukan bahwa Natsir dapat berkompromi menerima Pancasila sebagai dasar negara. Pandangan dan sikap politik Natsir moderat disebabkan pengalaman aktivitas politiknya dalam praktik pemerintahan. Berbeda dengan Natsir, Isa Anshary menolak Pancasila sebagai dasar negara. Pandangan dan sikap politik Isa Anshary berorientasi fundamentalistik disebabkan pengalaman aktivitas politiknya dalam revolusi fisik yang selalu berada di luar sistem pemerintahan. Tujuan penelitian ini ingin menunjukkan bahwa politik Islam yang dipresentasikan elite Persis tidak monolitik. Studi ini memanfaatkan sumber tulisan (pustaka) untuk melihat dan mendeskripsikan pandangan politik Persis yang tidak monolitik. Hubungan antara struktur lingkungan politik dengan individu-individu elite menjadi fokus uraian tesis ini.

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The focus of this study is the difference of political view and attitude between Natsir and Isa Anshary about State which is grounded by Pancasila versus Islam which is caused by the effect of their both environment and political activities. This study found that Natsir's view about Pancasila was moderate caused by his political experience in goverment. The opposition of Natsir's political view was Isa Anshary's. His politival view about Pancasila was radical caused by his political experience in revolution and his activity always out of goverment system. The purpose of this study is to understand that Islamic politic which is presented by Persis's ellite is not monolitic. This study mainly using the written sources to find out and describe political view of Persis's ellite which is not monolitic. The main focus of this thesis is explaining the relations between stucture of political environment and ellite's political view and attitude.