Khalil Sakakini is remembered for his political activism, his contribution to education in Jerusalem and Palestine, and his extensive writings during the first half of the 20th century. Sakakini kept a diary for 45 years starting in his late twenties, at the turn of the century. Almost daily, he wrote about his disciplined exercise routine, his healthy diet and impeccable hygiene, his reflections on philosophy and education, and his profound love for his wife, Sultana.
His expansive diary and the hundreds of letters he wrote to his wife and son, Sari, over the course of the first half of the 20th century reveal a complex and intellectually driven man. Sakakini was a man of profound and often conflicting thoughts and emotions on a variety of personal and communal realities, including his likes and dislikes, his thoughts on British and Western rule in Palestine, Zionism and Jewish immigration to Palestine, and the status of the Palestinian national movement. His diary reveals a great deal about life in Jerusalem before 1948 for upper middle-class Palestinians who were politically and socially active.