有什么名言可以体现事物的两面性？急！

Question

有英文的更好，就是事情都要从两个方面去考虑，比如战争，有坏的一面，也有好的一面
有没有名言？ 带上人名···（如：-Shakespeare）

Answer 1

"There are two sides to every question: my side and the wrong side."
- Oscar Levant
每个问题都有两个方面：我的一面和错误的一面。
- 奥斯卡·莱文特

Every street has two sides, the shady side and the sunny. When two men shake hands and part, mark which of the two takes the sunny side; he will be the younger man of the two.
- Bulwer-Lytton, Edward G.
每条等都有两面，荫面和阳面。两个人握手并分开时，如果能知道两个人谁站在了阳面；他将是两个人中更年轻的一方。
- 英国作家爱德华·鲍沃尔·李敦

“Peace and justice are two sides of the same coin.” (Dwight d. Eisenhower)
和平与正义是同一枚硬币的两个面。
- 美国总统艾森豪威尔

“Our language has wisely sensed the two sides of being alone. It has created the word 'loneliness' to express the pain of being alone. And it has created the word 'solitude' to express the glory of being alone.”
- Paul Tillich
我们的语言让人感到孤独的两个方面。它创造了“寂寞”这个词来表达一个人独处是时的痛苦。它同时还创造了“孤独”这个词，来表达孤独的辉煌。
- 保罗田立克

Answer 2

Every coin has two sides.
"There are two sides to every question: my side and the wrong side."
- Oscar Levant
每个问题都有两个方面：我的一面和错误的一面。
- 奥斯卡·莱文特

Answer 3

Every coin has two sides.
硬币都有两面。
这句是最地道的英语表达事物都有两面性的话了，一句俗语。

Peace and justice are two sides of the same coin.
- Dwight d. Eisenhower
和平与正义是同一枚硬币的两个面。
- 艾森豪威尔

世界上没有任何欢乐不伴随忧虑，没有任何和平不连着纠纷，没有任何爱情不埋下猜疑，没有任何安宁不隐伏恐惧，没有任何满足不带有缺陷，没有任何荣誉不留下耻辱！
- 德国作家格里美尔斯豪森

Answer 4

dichotomy

Never permit a dichotomy to rule your life, a dichotomy in which you hate what you do so you can have pleasure in your spare time. Look for a situation in which your work will give you as much happiness as your spare time.”—Pablo Picasso

Answer 5

兼听则明、偏听则暗

_____段炳德