Secular knowledge is the dharma with (karmic) outflows; Secular knowledge has (karmic) outflows and is impermanent. On the other hand, by simply hearing one verse of the Buddhadharma, you will have planted an everlasting diamond seed of Buddhahood. The Buddhadharma is like a diamond seed; even if you hear only one single sentence, if you immediately put it into practice with sincerity, you will benefit according to the amount of effort you put in. Your hard work will certainly be rewarded.