Love is like fire – when it is first kindled in us, small troubles and temptations smother and hinder it; but when it really burns, having kindled our eagerness for God, the more temptations and tribulations meet it, the more it flares, until it overcomes and consumes all injustice and wickedness.

Source: Love Is Like Fire. Riedemann (1506-1556) wrote this while imprisoned for his faith.