Dr. Martin Luther King Jr: Conscience asks the question

Cowardice asks the question, is it safe?
Expediency asks the question, is it politic?
Vanity asks the question, is it popular?

But conscience asks the question, is it right?
And there comes a time when we must take a position
that is neither safe, nor politic, nor popular,
but one must take it because it is right.

Source: The King Center

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