Portal:Bí-kok/Selected quote/2

Bí-kok seng-lí-lâng Bill Gates
Lí ê lâng-kheh siāng bô-hoaⁿ-hí hit-ê sī lí siāng chán ê ha̍k-si̍p chu-liâu.
(Your most unhappy customers are your greatest source of learning.)