"It costs a lot to fight the desire of the heart" highlights the idea that resisting deep personal urges or passions can be an expensive and challenging struggle. Pursuing what truly matters often involves sacrifices, and the process can be emotionally or morally costly.
"Everything you want to get, buy it at the price of the soul" emphasizes that obtaining desires or material possessions may come with a heavy moral or spiritual cost. The quote suggests that compromising one's integrity or values can lead to significant internal loss, making the attainment of worldly desires a complex moral trade-off.