必需之品从来不易讨价还价。
Necessity never made a good bargain.
高傲者冲锋，卑劣者殿后。
If Pride leads the Van, Beggary brings up the Rear.
头脑不能饱腹，聪明人也饿肚。
There's manny witty men whose brains can't fill their bellies.
慎问者需慎答。
Weighty Questions ask for deliberate Answers.
择友需谨慎，换友要三思。
Be slow in choosing a Friend, slower in changing.
