A little impatience can spoil a great plan; minor impatience will ruin major undertakings.
为了一个小小的口角就放弃了长久以来的友情，这真是小不忍则乱大谋
To give up a long-standing friendship over a minor quarrel is truly a case of a little impatience spoiling a great plan.
Era:
Ancient
Frequency:
Next Idiom