Perceiving is understanding something in the way that one would know an instinct. If one perceives something, he or she feels that it is true. This type of knowledge is kind of like common sense.
Knowing is understanding something in a more factual sense. If one knows something, he or she thinks it is true. This type of knowledge is similar to being "book smart."
When you know something, you do not always have to perceive it. For instance, when a student learns facts from a textbook in school without really caring about the subject, he only knows the facts, he does not perceive them.
If you perceive something, you do not necessarily have to know it. If one feels something is right, without knowing whether or not it is, they are only perceiving it.
There is no way of knowing that is superior to any other. Each way of knowing something has its own pros and cons. If you know a fact, there’s really no feeling behind that knowledge. If you perceive a fact, there’s no evidence behind that knowledge. One needs to know and perceive in order to be successful; a combination of intelligence and instinct is always necessary.
