A little learning is a dangerous thing 一知半解最危險
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Example
My brother read a book on driving a car and now he thinks he can drive. A little knowledge is a dangerous thing. 我弟弟讀了一本有關駕駛的書,就認為自己可以開車了,一知半解是滿危險的事。
Meaning
A small amount of knowledge can mislead people into thinking that they are more expert than they really are.
Origin
‘A little knowledge is a dangerous thing’ and ‘a little learning is a dangerous thing’ have been used synonymously since the 18th century.
The version ‘a little learning’ is widely attributed to Alexander Pope (1688 – 1744). It is found inAn Essay on Criticism, 1709, and I can find no earlier example of the expression in print:
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.
