Light.

If you lack enemies, you are not doing something worthwhile.
~ Unknown

Never give in, never give in, never; never; never; never - in nothing, great or small, large or petty - never give in except to convictions of honor and good sense.
~ Winston Churchill

People are like stained-glass windows. They sparkle and shine when the sun is out, but when the darkness sets in their true beauty is revealed only if there is light from within.
~ Elisabeth Kübler-Ross

There is in every true woman's heart, a spark of heavenly fire, which lies dormant in the broad daylight of prosperity, but which kindles up and beams and blazes in the dark hour of adversity.
~ Washington Irving