Original text - Engels - Text to be translated for a tattoo

This will be tattoed. There´s already the word 奴隶 in the tattoo, and the person whose tattoo it is, wants to change it... So please use 奴隶 in the translation.

If this is not possible, please give other suggestions, where the word 奴隶 could be. For example: Free yourself / Free the slave of your mind, etc. And please explain the meaning of the Chinese translation, if it is not what was asked for.

Thank you so much!!! I really appreciate :)