Summary
This quote suggests that those who lack knowledge or substance tend to be the most outspoken and attention-seeking. It implies that people who have little to offer intellectually or emotionally often use empty words and excessive noise to compensate for their inadequacies. In contrast, those who are knowledgeable and secure in themselves often do not feel the need to boast or make a lot of noise to prove themselves, as they possess the depth and substance to back up their words.