zhǐ / píng / pǐ / fū / zhī / yǒng / wǎng / wǎng / bù / néng / jiě / jué / fù / zá / de / wèn / tí

只凭匹夫之勇，往往不能解决复杂的问题。

Relying only on foolhardy courage often cannot solve complex problems.