St. Porphyrios: "And what is Paradise?"

Jesus Christ, the "Prince of Peace" (source)

  
"And what is Paradise? Christ," said the Saint, "When you love Christ, then, despite your sense of sinfulness and your weaknesses, you have the certainty that you have surpassed death, because you are in communion with the love of Christ. And may God make us worthy to see the Face of the Lord, both from the earth, and from there, where we will go."
-St. Porphyrios of Kavsokalyvia

(source)
  

Through the prayers of our Holy Fathers, Lord Jesus Christ our God, have mercy on us and save us! Amen!