We humans are capable of strength and power, but we are not born as being strong. However, everyone is capable of growing, becoming strong, and attaining personal power. No one is born strong, but no one is doomed to weakness unless they doom themselves to weakness.
Just as light and form can arise from nothing, so too can your strength. You are the source of your own strength and power, and thus as long as you are capable of attaining strength and power with nothing more than the power to grow.