Yes these proverbs are real and true
I know that humble people sometimes have poverty and problems in their life and rich people who are proudy seems to be successful but one thing is important to note that this is temporarily happened and real reward for humble people they surely have as well I think success not only linked with financial situation,it is too much linked that how much society gives you respect and here it proves that respect is only for those who knows to give respect to others
So in this way I have believe at this proverb!
Hopefully it's clear for you now...