In plain words
But the frog, which wished to rest on that very lotus even for a moment, does not drink its nectar, though it sits on the lotus. The reason is its state of being unable to recognise the thing called knowledge and discernment. Every man must without fail gain, along with śāstra knowledge, experiential knowledge and Viveka knowledge. All this knowledge got from acquaintance with books cannot, of itself, teach what is of use to the world, or the way to it. Along with this śāstra knowledge, experiential knowledge and Viveka knowledge, worldly knowledge too is essential. One who has gained these four kinds of knowledge in full, who has taken them in: he alone, we may say, is educated.
This worldly knowledge is not something to be had only through books. It is not to be gained from the teachings of gurus. You must travel the land. In keeping with our culture of Bhārata, honouring its civilisation, taking its history as the ground, honouring its wealth of the arts, we must try to recognise the wonderful, unbroken painting and sculpture found in many regions. What kind of life the people of that region lead, along what path their culture moves, in what way their trade, their daily life, their politics go on: all of this we must try to recognise by mixing freely with them. We must see the great arts of the ancient people of Bhārata. Even today, in places such as Ajanta, Ellora and Hampi, it lets us see a beauty full of many kinds of wonderful paintings. We must try to take in the beauty of nature well. The beauty of the mountains, the shade of the trees: how they enjoy these in such a setting, and how the experiences of it help man: this we must recognise. We must keep making visits to holy places and pilgrimages. That is why the ancients, the people of Bhārata, keeping such an intention in view, followed it in the form of pilgrimage and came to recognise the history, the culture and the greatness of each place. In the world of students, to shape this to some extent, each by name, they began to take students to many regions under the name excursion. This excursion is a taking out in order to teach worldly knowledge. If there is no worldly knowledge, śāstra knowledge, experiential knowledge and Viveka knowledge become useless.
In all of these we must show forth humility, the essence of vidyā. Learning without humility, work without discernment, scholarship without vijñata, music without sweetness, kinship without gratitude, friendship without purity, a society without discipline, a kīrtan without Bhakti: none of these can please the people, so they taught.