Who said "We cannot afford to be careless in this battle."?

This quote is attributed to Van Helsing.

We cannot afford to be careless in this battle. - Van Helsing

"We cannot afford to be careless in this battle."

Van Helsing

Character in Dracula

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"We learn from failure, not from success!"

"I would that there were more such marriages in this world."

"We men are dominated by the things of the earth, blood and brute force."

"I am here to do the work of the Lord."