St. John of the Ladder

“He was born about 579 and came to the monastery at Mount Sinai when he was sixteen, learning from his spiritual father Martyrius who tonsured him a monk at about age twenty. Martyrius died soon after and John retired to Tholas, five miles from the monastery, to live as a hermit. He lived in prudent moderation, eating everything allowed in small amounts. He slept very little and received the grace of continual prayer and the gift of tears.” [source]