Student or Learner
This is so confusing. Is it saying that proverbs from a certain country can reflect the people's idea or character or not? It's saying two contradictory things.
We must be careful when looking at proverbs as expressing aspects of a certain worldview or mentality of a people. That is, no fixed conclusions about a so-called “national character” should be drawn. There are so many popular proverbs from classical, Biblical, and medieval times current in various cultures that it would be foolish to think of them as showing some imagined national character. Nevertheless, the frequent use of certain proverbs in a particular culture could be used together with other social and cultural indicators to form some common concepts.
Thus, if the Germans really do use the proverb, “Morgenstunde hat Gold im Munde” (The morning hour has gold in its mouth) with high frequency, then it does mirror at least to some degree the German attitude towards getting up early.
It's saying that just because a country has a certain proverb, you shouldn't make any fixed conclusions about the people just because that expressions exists.
However, if a certain proverb exists and is said with high frequency, then it does reflect some truth about the people. Even then, you still need to look at some other social and cultural indicators before drawing any firm conclusions.
So only if it exits and is said commonly said by many people, should you begin to draw any conclusions about how an expression reflects national character.