Phase Change Materials

Famous quotes containing the words phase, change and/or materials:

    The problem of the twentieth century is the problem of the color-line—the relation of the darker to the lighter races of men in Asia and Africa, in America and the islands of the sea. It was a phase of this problem that caused the Civil War.
    —W.E.B. (William Edward Burghardt)

    We as women know that there are no disembodied processes; that all history originates in human flesh; that all oppression is inflicted by the body of one against the body of another; that all social change is built on the bone and muscle, and out of the flesh and blood, of human creators.
    Andrea Dworkin (b. 1946)

    Though the hen should sit all day, she could lay only one egg, and, besides, would not have picked up materials for another.
    Henry David Thoreau (1817–1862)