doctrine **
philosophy ***
philosophical system
school of thought
ism

These days there seem to be four schools of political economic thought.

Its quality lies in being the first window open to every school of thought.

"I don't know that much about the different schools of thought."

Two schools of thought are making their rounds on the matter.

However this belief is not followed by all economic schools of thought.

For these questions, several Democratic schools of thought are now in session.

There was a large school of thought where doctors would not even tell their patients they had cancer.

Instead, they found little effort to present opposing schools of thought.

The best we have at the moment are theories that fall into two main schools of thought.

I am aware that there are two schools of thought among you.