Famous paintings: Questions should be answerred to know if there is secret message!

The famous paintings create questions for me like:

- What are the common points between the famous paintings?

- Do the paintings hide a secret or do men use (secret) icons which were accepted during the Renaissance?

- What was the icon theory during the Renaissance?

- Is there a connection between Renaissance icon and alchemistry?

- How different did da Vinci interpretate them ?

- How are his paintings techniques compared to the development during the Renaissance?

- Why did da Vinci say that Raphael does understand it and Botticelli did not?

- Are we creating a new modern Renaissance period?

- Do we need multi-disciplinary knowledge and skills to manage the present world issues?

- Do we need another thinking process to manage the present world issues?

- Is there a comparison to make between power /religion culture in the Renaissance (on local level) and the Modern life (on global level)?

- If so, which one?

- What are my observation, analysis and conclusions?

- Why did the painters of the Renaissance need the knowledge of maths, anatomy, philosophy , etc?

- What did they do with this knowledge?

- Should man need a new visual language in present time, although we have more than enough media tools?

- What does the web visitor need of information? So what is the market?

- And which addition information does surprise him/her?

- What are the several secret messages behind the paintings? Or what are the different theories?

- How was the Renaissance in The Netherlands?

- Why was the Renaissance (only) important in Italy ?

- Could you learn the Renaissance’s painting and drawing techniques on an art school ?