Speaking of the Eucharist, St Gemma Galgani once said...
"It is a question of uniting two extremes.
God, who is everything, and the creature who is nothing;
God who is Light, and the creature who is darkness;
God who is holiness, and the creature who is sin.
It is a question of taking part in the Table of the Lord.
There cannot be, then, enough preparation for it."