The meaning of this sentence is: We can be ordinary people with low status and insignificance, but we cannot be disgusting people with twisted human nature.

Poetry analysis:

"The Long Road to Life" Mandela

If the sky never lights up, then live life in the dark;

If it is dangerous to make a sound, then remain silent;

If you feel unable to shine, then don't light up others.

But - don’t defend the darkness just because you are used to it;

Don’t be complacent about your own sloppiness;

Don’t ridicule those who are braver and braver than yourself. More caloric people.

It can be humble as dust, but cannot be twisted like maggots.