Ignem gladio scrutare modo—Only stir the fire with a sword! Hor.

Ignem ne gladio fodito—Do not stir the fire with a sword. Pr.

Ignis aurum probat, miseria fortes viros—Fire tests gold; adversity strong men. Sen.

Ignis fatuus—A deceiving light; a "Will-o'-the-wisp."

Ignis sacer—"St. Anthony's fire." Pliny.

Ignobile vulgus—The base-born multitude.

Ignoramus—An ignorant person (lit. we are ignorant).

Ignorance is a heavy burden. Gael. Pr. 5

Ignorance is a prolonged infancy, only deprived of its charm. De Boufflers.

Ignorance is bold, and knowledge reserved. Thucydides.