Hasty action is to be deprecated.

切不可草率行事.

His hasty action has put her out on a limp.

他仓促的举动使她处于危险境地.

They are still unaware of what will ensue from this hasty action.

他们尚未意识到这样草率的行为会带来的后果.

Too much self-inspection leads to morbidness; too little conducts to careless and hasty action.

不过过度的自我检讨会成为病态，检讨不足则又导致行事粗心草率。

Too much self-inspection leads to morbidness ; too little conducts to careless and hasty action.

不过过度的自我检讨会成为病态，检讨不足则又导致行事粗心草率。