This quote can be right and wrong at the same time....Sometimes imagination takes you to a higher level...But I think without having lots of knowledge, you cannot have that much imagination. So now, it's all up to you.
For me, knowledge and imagination goes hand in hand. Imagination without knowledge is just blah and so is the other way around. But I do think that having a strong imagination about somethings, is the root to opening up your mind about a lot of things.
So be imaginative and knowledgable at the same time.