About goat's wool, (i.e. a worthless matter).

Let the experiment be made on some worthless body.

He wishes well is worthless, unless the deed go with it. [ Plautus ]

A mother's love, in a degree, sanctifies the most worthless offspring. [ Hosea Ballou ]

There is no book so worthless, that I cannot collect something from it. [ Scaliger ]

When I say, Be not a miser, I do not bid you become a worthless prodigal. [ Horace ]

That nation is worthless which does not joyfully stake everything on her honor. [ Schiller ]

Wicked thoughts and worthless efforts gradually set their mark upon the face, especially the eyes. [ Arthur Schopenhauer ]

'Twas but a dream - let it pass - let it vanish like so many others! What I thought was a flower is only a weed, and is worthless. [ Longfellow ]

A worthless man will always remain worthless, and a little mind will not, by daily intercourse with great minds, become an inch greater. [ Johann Wolfgang von Goethe ]

The first class of readers may be compared to an hour-glass, their reading being as the sand; it runs in and runs out, and leaves not a vestige behind. A second class resembles a sponge, which imbibes everything, and returns it in nearly the same state, only a little dirtier. A third class is like a jelly-bag, which allows all that is pure to pass away, and retains only the refuse and dregs. The fourth class may be compared to the slave of Golconda, who, casting aside all that is worthless, preserves only the pure gems. [ Coleridge ]