And the Raven, never flitting.
Still is sitting, still is sitting
On the pallid bust of Pallas
Just above my chamber door;
And his eyes have all the seeming
Of a demon's that is dreaming,
And the lamplight over him streaming
Throws his shadow on the floor.
And my soul from out that shadow,
That lies floating on the floor,
Shall be lifted - nevermore. [ Poe ]

Look how the floor of heaven
Is thick inlaid with patines of bright gold;
There's not the smallest orb which thou behold'st
But in his motion like an angel sings,
Still quiring to the young-eyed cherubims. [ William Shakespeare, The Merchant of Venice ]

With the wind of tribulation God separates in the floor of the soul, the chaff from the corn. [ Molinos ]

Science is a good piece of furniture for a man to have in an upper chamber, provided he has commonsense on the ground floor. [ O. W. Holmes ]

Fame is a shuttlecock. If it be struck only at one end of a room, it will soon fall to the floor. To keep it up, it must be struck at both ends. [ Johnson ]

The old pool shooter has won many a game in his life. But now it was time to hang up the cue. When he did all the other cues came crashing to the floor. Sorry, he said with a smile. [ Jack Handey, Deep Thoughts ]

Science is a first-rate piece of furniture for a man's upper chamber if he has common-sense on the ground-floor. But if a man has not got plenty of good common-sense, the more science he has the worse for his patient. [ Oliver Wendell Holmes ]