In 1914 after four years of concentrated yoga at Pondicherry, Sri Aurobindo launched Arya, a 64 page monthly review. For the next six and a half years this became the vehicle for most of his most important writings, which appeared in serialised form. These included The Life Divine, The Synthesis of Yoga, Essays on The Gita, The Secret of The Veda, Hymns to the Mystic Fire, The Upanishads, The Foundations of Indian Culture, War and Self-determination, The Human Cycle, The Ideal of Human Unity, and The Future Poetry. Sri Aurobindo however revised some of these works before they were published in book form.
After this prolific output, Sri Aurobindo's only literary works, apart from some poems and essays, was his epic poem Savitri, which he continued to revise for the rest of his life. However, following his retirement from public life in 1926, he maintained a voluminous correspondence with his disciples. His letters, most of which were written in the 1930s, numbered in the several thousands, and some of these were later published in three volumes as Letters on Yoga.
Although Sri Aurobindo wrote most of his material in English, his major works were later translated into a number of languages, including the Indian languages Hindi, Bengali, Oriya, Gujarati, Marathi, Sanskrit, Tamil, Telugu, Kannada, and Malayalam, as well as French, German, Italian, Dutch, Spanish, Chinese, Portuguese, and Russian. A large amount of his work in Russian translation is also available online.