what does "nationalism" in this quotation suggest?

Question

"The root of nationalism shouldn't be solely found in the tongue but in the heart"

Answer 1

From the "Stanford Encyclopedia of Philosophy":

"The term 'nationalism' is generally used to describe two phenomena: (1) the attitude that the members of a nation have when they care about their national identity and (2) the actions that the members of a nation take when seeking to achieve (or sustain) self-determination. (1) raises questions about the concept of nation (or national identity), which is often defined in terms of common origin, ethnicity, or cultural ties, and while an individual’s membership in a nation is often regarded as involuntary, it is sometimes regarded as voluntary. (2) raises questions about whether self-determination must be understood as involving having full statehood with complete authority over domestic and international affairs, or whether something less is required."

Answer 2

Having strong pride and much loyalty in one's crountry.