Who said "The struggle teaches us what we are capable of."?

This quote is attributed to Van Helsing.

The struggle teaches us what we are capable of. - Van Helsing

"The struggle teaches us what we are capable of."

Van Helsing Perseverance

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."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."