Is it absolutely necessary to use a medium?

[Chris Saper]

Hi Jean,

No, it's not necessary to always use a medium. Or ever.

I am just now experimenting with a medium, and I don't like it particularly, although I plan to do many paintings first, as it's just a new learning curve. To date, I have only used paint from the tube, with the underlayers thinned a little with mineral spirits (or in the past, Turpenoid).

I think your use of medium should be based on that you like, what you want your work to look like, and what your painting temperament is like.