O most lame and impotent conclusion! [ William Shakespeare ]

Sloth views the towers of fame with envious eyes.
Desirous still, still impotent to rise. [ Shenstone ]

The strongest arm is impotent to impart momentum to a feather. [ Arthur Schopenhauer ]

'Tis impotent to grieve for what is past, and unavailing to exclaim. [ Harvard ]

Conceit not so high a notion of any as to be bashful and impotent in their presence. [ Fuller ]

Like a large heart overflowing with an impotent and vague love, the universe is ceaselessly in the agony of transformation. [ Renan ]

I look upon paradoxes as the impotent efforts of men who, not having capacity to draw attention and celebrity from good sense, fly to eccentricities to make themselves noted. [ Horace Walpole ]