천려일실千慮一失 (일천(一千) 천, 생각할 려, 한 일, 잃을 실)
cheollyeoilsil
ENa thousand thoughts + one loss (하나의 실책(失策 a mistake)) = even if you have 1000 good thoughts, you can still make a big blooper
cheollyeoilsil
ENa thousand thoughts + one loss (하나의 실책(失策 a mistake)) = even if you have 1000 good thoughts, you can still make a big blooper