Learn from me, if not by my precepts, at least by my example, how dangerous is the acquirement of knowledge and how much happier that man is who believes his native town to be the world, than he who aspires to become greater than his nature will allow.

Victor hopes people will learn with his mistakes

Explanation:

In the novel Frankenstein, Victor understands that knowledge can create evil and good, as in the above sentence he shows that a man devoid of that knowledge is a happy man, showing that ignorance some  times really is a bless. He also says that you must understand and recognize your own limits.

they all focused on themes about the inevitability of death.