My guess would be opinion.
I think the proverb means that. You need to take classes in architect ( or some education ) to learn how to build houses and by understanding if it's firm on a base. By knowledge the rooms are filled with all precious and pleasent riches. Like a designer, you need to know about design. The proverb is basically about how you need knowledge to do both of these things.
A.
The third person account explained in simple detail what was
happening on the bus. The first person account gave a more emotional and
distraught tone to the reader.
