Who said "We are all bound by duty."?

This quote is attributed to Jonathan Harker.

We are all bound by duty. - Jonathan Harker

"We are all bound by duty."

Jonathan Harker

Character in Dracula

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"We must be united, or the enemy will exploit us."

"Time is the greatest enemy in our struggle."

"Love demands sacrifice, and sacrifice demands courage."

"We are all changed by what we have witnessed."