He walks through the house of his past, hoping he'll find the right door, hoping he'll find the key.

Always remember to take the door-key.

Praise they that will times past, I joy to see My selfe now live: this age best pleaseth mee.

They have a crystalline sense of right and wrong; it disappears when they walk out the door with their M.B.A.

It is often the last key on the ring which opens the door

He stepped fully into the house. The air inside was cool on his skin. He turned, expecting the front door to close on its own. But it stayed open, as it was supposed to. He shook his head, chiding himself for letting an old house spook him. He walked into the kitchen. Behind him, the front door slammed shut.