Life conditions -> living conditions
Ancients -> ancestors
But individual in civilization society can be a complete & freedom human -> individuals within civilised society can be a complete and free man
People can be socialized to take this condition for granted -> people can be conditioned to accepting such tems (taken for granted is reserved for positive events)
Unconscious -> subconscious
It perceives the truth inevitably & messages it in a subtly way -> It perceives the truth inevitably (message is probably the wrong word, but I could not figure out what you were trying to say) subtly/in a subtle way

一點我的小建議，主要是語法和用詞有點不正確