This quote is trying to tell you that semicolons are not an important or useful writing tool. A semicolon (;) is a punctuation mark that combines two clauses into one sentence. The quote is saying that semicolons do not represent any real information or meaning in your writing, and only show that you have gone to college, or have a good understanding of grammar rules. The quote is also saying that you should not rely on semicolons for creative writing as they provide no real benefit and you don’t need to know complex grammar rules in order to be creative.