What is light horse brigade?

Famous quotes containing the words light, horse and/or brigade:

    She would rather light a candle than curse the darkness, and her glow has warmed the world.
    Adlai Stevenson (1900–1965)

    Later you hear it wander the dark house
    Like a mother who rises at night to seek a childhood picture;
    Or it goes to the backyard and stands like an old horse cold in the
    pasture.
    Robert Penn Warren (1905–1989)

    Rational free spirits are the light brigade who go on ahead and reconnoitre the ground which the heavy brigade of the orthodox will eventually occupy.
    —G.C. (Georg Christoph)