yes they do- but neither the second of third phrase is correct are you trying to find out if there is another way to express 'as a matter of principle', or are you not sure what the phrase means? I really can't think of another way to say that- it means I believe something (a principle-moral, pedagogic or otherwise) therefore...
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.