It was intelligent for Man to realise that when something heavy being pulled on ground passes over some rounded stones it not only goes faster but also becomes easier to pull. This therefore was intelligence that led ancient folks to invent wheel. It was also intelligent for them to find the earlier use of fire, and be curious about the phenomenon of lightning. Then it is also natural to Man to tell the rest of the people what initially just one person may have found. I believe, this is how our personal experiences in form us, and our sensible information adds up to form body of common human knowledge even to date.
Our intelligence is our ability to apply our senses to extract useful information from the world around us, to extract facts. And our knowledge is a systematic record of these facts put together. Our knowledge is what we believe to be true, a systematic organisation of facts about our world that are proven to be true though our experience.
It is intelligent for Man to invent wheel, to discover fire and to be curious about lightening, but it is through knowledge that we have been able to keep track of these and many other similar facts, and eventually to establish a connection among various facts, and eventually to be able to build a car.
However, it has been possible for us only after many centuries to realise that it is not wise to roll around in fast and gas-guzzling cars as frequently as we like and wherever we like. It is the wisdom that has come to us only after we significant amount of knowledge and experience. If one is wise, then one is also knowledgeable and informative, and if one is knowledge, then he is also intelligent, but it is not uncommon in some people to be intelligent and even knowledgeable but unwise.