Unhappy, with your thoughts turned in upon your emotional woes, your vision is cut short as though by a wall.Happy, the wall crumbles.

• 当你不快乐时，你的思维陷入情感上的悲哀，你的眼界就像是被一道墙给阻隔了，而当你快乐时，这道墙就会砰然倒塌。