Proverbially, it's what you hope to do "with one stone"
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varying the proverbial phrase "to catch two birds with one stone" to sum up his... [DOC] [TLE] Proverbial Lore in Nebraska - DigitalCommons@University of ... [PAR] no conception of its extent until he consciously listens for it and keeps a record 
..... As ye would that men should do to you, do ye unto them.