Student or Learner
Mike always followed the company line.
What does it mean that he "followed the company line"?
George knew that if you wanted to reach a healthy old age, you would be more likely to achieve your wish if you didn't smoke. But - he enjoyed the good pay and benefits that his employer (a tobacco company) gave him, so he followed the company line.
We understand by this that he never publicly admitted his private views about the effects of tobacco on health.