A series of memoirs indicate that Imam used to spend several constant hours from every day to read books and explore knowledge.
He used to spend too much time for conducting research and study on daily basis.
Family members say great Imam was always surrounded by books and sometime had not left his study chair for several hours from morning until the noon prayer.
In some cases, Imam was seen busy in reading and writing at 3. A. M in early dawn.
Sources say Imam Khomeini, who left an enriched academic legacy, also started to write his dynamic thought even on a paper if in a case he became tired of too much studying or reading books.
(Extracted from a collection of memoirs about Imam Khomeini)