Summary
This quote suggests that knowledge has a contrasting effect on individuals with large and small brains. For those with large brains, knowledge fills and expands their mental capacity, allowing them to absorb more information. However, for individuals with small brains, acquiring knowledge does not enhance their cognitive abilities but rather inflates their sense of self-importance. In other words, the quote implies that knowledge is beneficial for those already capable of understanding and processing information, but it can have a negative impact on those with limited intellectual capacity.