Effective Focal Length

Famous quotes containing the words effective and/or length:

“[Humanity] has unquestionably one really effective weapon—laughter. Power, money, persuasion, supplication, persecution—these can lift at a colossal humbug—push it a little—weaken it a little, century by century; but only laughter can blow it to rags and atoms at a blast. Against the assault of laughter nothing can stand.”
—Mark Twain [Samuel Langhorne Clemens] (1835–1910)

“With the ancient is wisdom; and in length of days understanding.”
—Bible: Hebrew Job, 12:12.