Conquest by Ella Wheeler Wilcox

Talk not of strength, until your heart has known
And fought with weakness through long hours alone.

Talk not of virtue, till your conquering soul
Has met temptation and gained full control.

Boast not of garments, all unscorched by sin,
Till you have passed, unscathed, through fires within.

Oh, poor that pride the unscarred soldier shows,
Who safe in camp, has never faced his foes.