知其不可而為之

1. • to keep going resolutely despite knowing the task is impossible (idiom)

Character by character

• 知(zhī)know
• 其(qí)his
• 不(bù)no
• 可(kě)can
• 而(ér)and
• 為(wéi)as (in the capacity of)
• 之(zhī)(possessive particle, literary equivalent of 的 de)