I'm be no means an expert in philosophical terms, but I want to learn more. My question is about whether there is a name for the idea that abstract concepts (e.g. Goodness, baddness, value, etc...) exist only within our mind. I don't mean that to say that such concepts as goodness, or purity, or whatever it may be, are an illusion. I'm saying that they exist within only ourselves, but are very real within that.
An Apple is red (that can be measured scientifically). It also has a specific density, (that too can be measured scientifically.) However, the taste of the apple, whether good or bad or inbetween, exists only within our minds. (This can't be measured scientifically.)
As such, I would say that the apple, in this sence is both, at the same time, good and bad in taste, as all of those concepts exist within us.
This concept could be applied to a more broad subject though.
Under this thought process, one couldn't make statments such as "As time goes on there is progress, which is intrensically built into history." (I don't know of this is the best way to word that statment, but I was trying to model what I think is Hegal's view of time/history) The reason that one wouldn't be able to say this would be because, as progress in that sence is an abstract concept, it exists only within ourselvs. One could say however, that over time, cities have had more inferstructure built and this leads to better living expectancy ect. ect..
Were progress to be used in the abstract way I above said, one could really just say that anything is progress, and, really, that is true; but it is just as true as saying that there is no progress.
I hope I explained the concept well, but if not, I would be happy to clarify. Anyhow, is there a term for this idea?