How os the garden likened to the garden of eden

"It was the Eden of a thunder-smitten Adam, who had fled for refuge thither out of the same dreary and perilous wilderness into which the original Adam was expelled."

He enjoys the secluded garden with his small circle of companions because it gives the appearance of nature and reality, but is still cut off from any dangers of actual life. For Clifford the garden is an Eden: perfect and harmonious but nevertheless a fantasy separate from the world outside of the House of the Seven Gables.