Would someone for instance like to adjust and awaken by reading alone, he would be like one who would sow the seed on an unplowed, unfertilized field. Will not the birds soon come from the air and consume most of the seed in a short time?! And will a small part, which fell among the weeds of the field, not be suffocated by it at once, so that in the end, at the time of the harvest, not even a grain shot into a stalk will be seen anywhere?! – Explanation of Scriptures, Chapter 2, Paragraph 10