The central theme of the Sufi's life is the freedom of the soul. As the great Persian Sufi poet Rumi says, 'The soul on earth is in a prison, and it remains there as long as it lives on earth'. Man may or may not realize it, but there is a deep yearning in every soul to rise above this imprisonment, to escape from this captivity; and the answer to this yearning is spiritual attainment.
Hazrat Inayat Khan Vol. 8a, Sufi Teachings, History of the Sufis