A chain is only as potent as its weakest link. One more than one is a congenial group of invited guests, but one more than two is a multitude. . . . Answer . . . Two's company, three's a crowd. Hemoglobin is more viscous than H2O . . .
Blood is thicker than water.
Perambulate in moccasins, and shoulder a gargantuan wooden rail. . . . Walk softly and carry a big stick. Allow somnolent quadrupeds that are homosapien's greatest comrades to remain reclining. . . . Let sleeping dogs lie. Lack of what is required is the matriarch of inspiration. . . .