Fasting is a virtue only when it is accompanied by conditions which render it pleasing to God. Thus it happens that it profits some and not others, because it is not undertaken by all in the same manner.
Because I am a sinner, and I am going to die someday. And apart from my relationship with God, that would be the end of the story. The cross of ashes on my forehead reminds me of the resurrection I hope for after my physical death.
-- How to explain your ashes to someone who doesn’t know what they are (via barfonomics)