It is a good workman that never blunders. 智者千虑必有一失。
It is a good horse that never stumbles. 金无足赤，人无完人。
It is a good horse that never stumbles. 良马不失
It is as well to know which way the wind blows. 识时务者为俊杰。
It is a wise father that knows his own child. 父贤知其子。
It is dogged (that) does it. 天下无难事，只怕有心人。
