He who aims at things beyond his power may be injured by his projects.
He that hides kens whaur to seek.
He that ill does never gude weens.
He who is in the habit of ill-doing himself always has a bad opinion of others.
He that invented the maiden first handselled her.
James, Earl of Morton, who invented the "maiden" or guillotine, was the first who suffered by it.
He that isna handsome at twenty, strong at thirty, wise at forty, rich at fifty, will never be handsome, strong, wise, or rich.
He that keeks through a keyhole may see what will vex him.
"He who looks through a hole will discover his dole."—Spanish.