The phrase "A truly strong person" implies that genuine strength comes from within, rooted in self-belief and self-assurance. It suggests that someone who is truly strong doesn't require external validation to affirm their worth.
The term "the approval of sheep" uses metaphorical language to refer to those who conform to the opinions or behaviors of the majority without critical thinking. It implies that seeking approval from such individuals is unnecessary and can even be limiting.
In essence, this quote encourages the idea that inner strength and authenticity should guide a person's actions and decisions, rather than seeking approval from those who may merely follow the herd. It champions the importance of staying true to oneself and one's convictions.