A little learning is a dangerous thing;
Drink deep, or taste not the Pierian spring:
There shallow draughts intoxicate the brain,
And drinking largely sobers us again
-Alexander Pope
It means to learn deeply or not at all. Many people have a surface level understanding of complex topics and think they're experts. The author is warning the reader against becoming like that.
Or to put it a similar way, never stop learning.
@AlphaCentauri @GNious I suppose so. Yes.
@danielbsmith @GNious
So, it's about the Dunning-Kruger Effect?