The sentence illustrates the theme of the text by conveying the idea that fate is a dominant force in people's lives and that meddling with it can lead to negative consequences. The correct interpretation is:
It implies that nobody should try to control their own fate or the lives of other people.
This interpretation aligns with the notion that attempting to interfere with fate ultimately results in sorrow, highlighting the theme of the inevitability of fate and the dangers of trying to alter it.