“Ignorance more frequently begets confidence than does knowledge.”
Darwin warns that limited knowledge can make sweeping certainty easier, while deeper inquiry often exposes how much remains unresolved.
Source details
The Descent of Man, and Selection in Relation to Sex, Introduction, represented by Project Gutenberg #2300. Darwin writes that 'ignorance more frequently begets confidence than does knowledge' while rejecting confident claims that human origins could never be solved by science. The frozen quotation capitalizes the clause as a standalone sentence although it appears after a colon in the witness; it remains a historical scientific argument, not a universal quantitative law about confidence.