Both optimists and pessimists contribute to society. The optimist invents the aeroplane, the pessimist the parachute.
乐观主义者和悲观主义者都对社会做出了贡献。乐观主义者发明了飞机,而悲观主义者则发明了降落伞。
Both optimists and pessimists contribute to society. The optimist invents the aeroplane, the pessimist the parachute.
乐观主义者和悲观主义者都对社会做出了贡献。乐观主义者发明了飞机,而悲观主义者则发明了降落伞。