"It is a tragedy of the world that no one knows what he doesn't know - the less a man knows, the more sure it is that he knows everything"

This quote by Joyce Cary speaks with the disaster of the world in which individuals are frequently unaware of what they do not know. This lack of understanding can lead to an incorrect sense of self-confidence and certainty in one's own beliefs and viewpoints. This can be seen in the second part of the quote, which states that the less an individual understands, the more sure they are that they know whatever. This can result in an unsafe scenario in which individuals are unable to recognize their own lack of knowledge and are not able to gain from others. This can cause a lack of progress and understanding in the world. It is essential to acknowledge that knowledge is not finite which there is constantly more to learn. It is just through recognizing our own lack of knowledge that we can strive to become more well-informed and understanding.