When we progress towards inculcating beautiful thoughts, mastery of the mind, beautiful and noble sentiments and feelings, mastery over vital impulses, we are actually serving Her.
Freedom of thought and speech, like everything else, is a means towards an end. To turn it in an end by itself and make it an absolute is to arm the devil.
Very briefly Sanatana Dharma is a many-sided approach to the One Supreme Reality behind and within everything and the ways to discover and manifest this Reality in our everyday life.