Ishak Haji Muhammad (14 November 1909 – 7 November 1991), better known as Pak Sako, was a Malaysian writer, active in the 1930s until the 1950s. He was a nationalist and his involvement began before independence and continued thereafter. He fought for the idea of the unification of Melayu Raya where Indonesia, Malaysia and Brunei are united in one collective. The moniker Pak Sako was from the title 'Isako-san' given to him by the Japanese, which was the phonetic pronunciation of his name in the Japanese tongue. Ishak's other pseudonyms include Anwar, Hantu Raya (The Great Ghost), Isako San and Pandir Moden (The Modern-day Pandir) Early life Ishak was born in 1909 in Kampung Bukit Seguntang, Temerloh, Pahang and received his early education at the Kg. Tengah Malay School, Temerloh in 1919 and continued his education at the Clifford High School, Kuala Lipis from 1924 to 1928. He received his certificate of education from the Raub English School in 1929. In 1930, he went to the Malay College Kuala Kangsar (MCKK) to train as an officer in the Malayan Civil Service. He held posts as Assistant Deputy District Officer, a Class III Magistrate and a language teacher before entering the literary scene. He attended the Malayan Communist Party in 1941 before the Japanese Occupation of Malaya and became a central committee member of MCP along with Rashid Maidin, Ahmad Boestamam and Abdullah CD in Perak. Writings and politics Ishak grew bored with his job as a British administrator and found the life of a British civil servant full of deception, favouritism and no interest in preserving the interests of the Malays who were said to have been given protection by the British. In 1934, he resigned from the Malayan Civil Service and travelled the peninsula Malaya. He later concentrated on nationalist literature and politics. He was imprisoned twice (1948–1953; 1965–1966). Malay envoy Ishak was the first with the idea to publish the Utusan Melayu (The Malay Post) newspaper and subsequently became the founder of the publication. He left Warta Malaya (Malayan Times) and travelled to Pahang, Kelantan and Terengganu to campaign for the establishment of the Utusan Melayu Press. He worked at the paper under Abdul Rahim Kajai as editor. During the Japanese occupation of Malaya, he became the editor of Berita Malai (Malayan News). He continued to live in Hulu Langat even though he worked in Kuala Lumpur. He