The two claims Frederick Douglass is making in the passage are:
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Oppressed people must stand up for their rights if they want other people to help them obtain those rights.
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It is human nature to prefer helping those who seem to want help and a way out of negative circumstances.
These claims reflect Douglass' assertion that individuals must first value and strive for their own freedoms and rights in order to be worthy of assistance from others, and that society respects and supports those who actively seek to improve their conditions.