The range of human knowledge today is so great that we're all specialists and the distance between specializations has become so great that anyone who seeks to wander freely between them almost has to forego closeness with the people around him.
In the word of John Quincy Adams :"To furnish the means of acquiring knowledge is ... the greatest benefit that can be conferred upon mankind. It prolongs life itself and enlarges the sphere of existence."
Only a blind man can easily define what light is. When you do not know, you are bold. Ignorance is always bold, knowledge hesitates. And the more you know, the more you feel that the ground underneath is dissolving. The more you know, the more you feel how ignorant you are
Enjoy the compiled inspired reflections on knowledge from the masters