We all have knowledge, but that does not mean we have truth.
Not everyone realises that knowledge and truth are different. It is possible to have a vast amount of knowledge and still not possess a single truth. The fact is that humans are only very good at guessing things. It is therefore our responsibility to cast our judgements carefully, and be aware of how we form our beliefs and opinions. I believe we should place more value on the process of unlearning and starting again as we already place on the original act of learning. Everything in life is subject to change and interpretation. The best knowledge we can hope to attain is the kind that is unfixed and open to continual reappraisal or new ideas. Truth is a noble concept, but it is very hard to find.