Badges mark quoted or attributed material (Qur'an, hadith, another author, an opposing view). Unbadged passages are Maulana Wahiduddin Khan's own words.
Gaining Knowledge p. 10
The Prophet of Islam once observed, “It is the duty of every Muslim, man or woman, to acquire knowledge.” (Sunan ibn Majah, Hadith No. 224) This tradition shows the importance of knowledge in Islam. Knowledge is necessary for the realization of God. That is why its acquisition has been made obligatory. Learning increases man’s awareness; it opens the windows of his mind; it broadens the scope of his thinking which enables him to understand deeper realities. Benefiting from the experiences of others raises his intellectual level. p. 10original + quote
Knowledge is essential for both religious and spiritual development. The mind reaches maturity through gaining knowledge. This process of intellectual development becomes a continuous process. Knowledge elevates a man from the animal level to the level of a human being. p. 10