Now there is another question: a person may say, 'must we teach that, must we lecture about that, which is difficult to learn'? The answer is: the outer knowledge is not enough. It is not sufficient to say: "my neighbor and I are one," that is only imagination. There are two things: conception and conviction. Conception is the crescent, conviction is the full moon. What is learned by study is conception, but that is not sufficient. The conception must be deepened as the moon rises. As conception is deepened it results into conviction. The working of the Sufi Movement with students and workers is the idea of deepening the conception till conviction results.