"To sin by silence when they should protest
makes cowards of men."
Abraham Lincoln (1809-1865)
16th President of the United States
'Nuff said. Reminds me of another one:
"All that is necessary for the triumph of evil
is that good men do nothing."
Edmund Burke (1729-1797)
Irish statesman, Member of Parliament
Old Abe on Wikipedia
More quotes from Edmund Burke