There is a little plant, the saxifrage (pronounced SAK-suh-frij), a low-lying thing that grows in poor soils and puts out small white, yellow, or red flowers. It can be found in alpine areas and is sometimes grown in rock gardens.
But its name is mighty. The late Latin saxifraga, comes from the roots saxum, "rock," and frangere, "to break." This little thing is a rock-breaker.
Example: In "A sort of Song," William Carlos Williams takes this plant as an emblem and example for the writer: "Compose. (No ideas / but in things) Invent! / Saxifrage is my flower that splits / the rocks."