In plain words
Students must first of all keep discipline in the matter of food. Meat is very bad.
Faulty food is the root cause of disease
Even cattle, birds and wild beasts keep to a rule about food. If we, born as human beings and educated besides, keep no rule about food, what use is it! Even students used to meat from childhood give it up completely after they enter our institution. Their parents too are amazed to see the change in them. When they go home in the holidays and the mother serves some meat: “Do not eat meat. Do not urge us to eat it. This is what starts terrible diseases like cancer,” they say, and so they bring about a change in their parents too. I do not know whether you have read it in the papers and in books.... In the region of Singapore people eat a great deal of fish. Along with the fish, harmful bacteria enter them and bring them to ill health. You can see this clearly in our own Bhārata as well. The chief cause of the diseases that come to us is faulty food!