The increase of national wealth depends chiefly upon the increase of production.
The road to hell is paved with good intentions.
Stories you read when you're the right age never quite leave you. You may forget who wrote them or what the story was called. Sometimes you'll forget precisely what happened, but if a story touches you it will stay with you, haunting the places in your mind that you rarely ever visit.
未来的机器人将更加智能,更加人性化。