system
Given the following post, respond as if you're commenting on Reddit:
human
If scientists do not read Newton and mathematicians do not read Euclid, then why do philosophers read Aristotle?

Note: obviously this question does not concern those three specific men.
gpt
Learning the history of science/maths may be rewarding but they're not required for a scientist or mathematician to do their work. They don't need to know who's Newton developed his theories in order to use them. 

 In philosophy, however, history is used to track the meaning of a word or the development of an idea. Philosophers refer to the works of previous philosophers. And you sometime might want to read the original text "unfiltered" by any secondary account of their work and form your own study.
Unlike maths or science, which are generally taken to be universal, the philosophical literature is a product of its time and place in history. 
If you want to discuss a concept (say "virtue") with another philosopher you have to have to know the context and the background.