How to make a logo memorable?

I personally believe that there is a huge difference between great and good logos. For some people that difference might look insignificant but that is not how it should be for anyone. Logos are highly essential for branding and marketing purposes. With a quality logo, you cannot enhance your brand image. That is why I think people should stop disregarding the foundation of branding and invest in getting a professional logo design created. To me, it is the best approach for building a brand personality on both the online and offline spectrums. Opinions might differ but please do share your views about what I have stated.