During the second world war Jews, Serbs and Gypsies were killed in Nazi concentration camps. I mention this here because of apples being symbols in all three ethnic/religious cultural groups as something to do with respect for knowledge.
I find it fascinating how ancient symbol of apple and its association with women is found amongst Serbs even today. At traditional Serbian wedding bride takes an apple and presses some coins into it the night before the wedding. At the wedding she turns her back to the guests and throws the apple for men to try to catch. Man who catches it is the first to get married next, so they say.Thus again there it is an apple a symbol of knowledge of who is getting married next.
Cut apple through equator can seem like a flower with five petals to some and maybe that is why in some cultures it is a bouquet of flowers which bride throws to her bridesmaids. Again, it is used as a symbol of "knowing" who will be the next bride.
Old Slavs had several gods including one called Svetovid (Holysight) or God of Justice which is not the same thing as law, of course. In some cultures symbol of justice is not to see. Exact opposite, superficially. However, in both cases it is as if something extraordinary is required.
Freemasons experienced persecution for centuries and Catholic church was openly hostile for hundreds of years. Pope Pius condemned it as sects from which synagogue of Satan is formed. Freemasons accept people of all religions even those who do not believe in God as some religions are godless and yes, it includes Catholics if they accept the moral code. Of course, Catholic church prefers money to be given to them rather than to masonic charities. Business competition, I call it.
What a coincidence that it is during the "reign" of a Catholic Prime Minister Mr Anthony Blair that legislation was introduced that Freemasons have to declare themselves in public life, but he, Mr Blair kept his true religion secret until his premiership ended. Nice to be safe, isn't it, Mr Blair. A bit selfish too, as you did not care much about the safety of others.http://www.independent.co.uk/news/uk/politics/freemasons-should-tell-of-allegiance-1561362.html