there's this theme for android i don't understand the characters, can you help me translate it? (the characters are on images bellow) https://imgur.com/a/0GzzcKM 
https://imgur.com/a/wtj7sah 

theme name  is Fo mo dao xian buddhism, also would apreciate if you tell me what does that mean.
The big character on the first image is 魔 (demon) and the poem is  a statement from the perspective of 魔


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  The big character on the second image is 道 (The Truth/ The Way) and the poem is a statement from the perspective of 道


In the philosophy sense 魔 and 道 are the opposite of each other: 


道 represents 'enlightened mind' that extended to 'just, peaceful, kind, selfless and everything positive'
魔 represents 'fallen mind' that extended to 'unjust, violent, cruel, selfish and everything negative'


As for the two poems:


天地不仁何乞憐，我以我血染青天，魔前一扣三千年，回首凡塵不做仙


(The universe is unkind, what is the use of begging for mercy? I'd use my blood to paint the blue sky red; Three thousand years since I had submitted to the way of demon, looking back at the mortal world, I'd rather not being a god)


曾經滄海難為水，除卻巫山不是雲，萬花叢中懶回顧，半緣修道半緣君


(Experienced the vast ocean, it is hard to be a pool of still water; Experienced the grand cloud-sea on top of Wushan,  other clouds are no longer impressive;  In the middle of an endless flower field, I don't have the desire to look back; Either you can achieve all these or not, half depend on the study of Dao and half depend on yourself )