What are strenuous?

Famous quotes containing the word strenuous:

    Miss J. Hunter Dunn, Miss J. Hunter Dunn,
    Furnish’d and burnish’d by Aldershot sun,
    What strenuous singles we played after tea,
    We in the tournament—you against me!
    Sir John Betjeman (1906–1984)

    A day
    Spent in a round of strenuous idleness.
    William Wordsworth (1770–1850)

    No one is more deeply than myself aware that without His favor our highest wisdom is but as foolishness and that our most strenuous efforts would avail nothing in the shadow of His displeasure.
    Abraham Lincoln (1809–1865)