阿爾伯特·  愛因斯坦（Albert Einstein，1879年3月14日—1955年4月18日），著名理論物理學家。

這世界不會被那些作惡多端的人毀滅，而是冷眼旁觀、選擇保持緘默的人。

The world will not be destroyed by those who do evil,but by those who watch them without doing anything.



德國牧師馬丁．尼莫拉（Martin Niemoller）

「起初他們捉拿共產黨員，我保持緘默，因為我不是共產黨員；
  他們捉拿猶太人，我保持緘默，因為我不是猶太人；
  他們捉拿工會成員，我保持緘默，因為我不是工會成員；
  他們捉拿天主教徒，我保持緘默，因為我是新教教徒。
  最後，他們要捉拿我，卻再也沒人為我說話了。」



新英格蘭猶太人大屠殺紀念碑中的英文版
THEY CAME FIRST for the Communists,
and I didn't speak up because I wasn't a Communist.

THEN THEY CAME for the Jews,
and I didn't speak up because I wasn't a Jew.

THEN THEY CAME for the trade unionists,
and I didn't speak up because I wasn't a trade unionist.

THEN THEY CAME for the Catholics,
and I didn't speak up because I was a Protestant.

THEN THEY CAME for me,
and by that time no one was left to speak up.

https://zh.wikipedia.org/wiki/起初他們……