It is highly conducive to the interests of the community that each individual should enjoy a liberty perfectly unlimited of expressing his sentiments

I think this one is acceptable by observation.
Am i right?

"should enjoy" ? If this is a premise leading to a conclusion, I would not accept it. This was not true in the Army, nor is it true in many communities.

And, to add to what bobpursley wrote, who is doing the observation and how? What method of observation is being utilized?

Your statement reflects the idea that it is beneficial for individuals to have the freedom to express their thoughts and opinions without any limitations. To determine if your statement is acceptable or correct, it would be helpful to consider multiple perspectives and sources of information.

One way to approach this is by examining whether this belief aligns with widely accepted principles of human rights and democratic ideals. The Universal Declaration of Human Rights, for example, asserts that "everyone has the right to freedom of thought, conscience, and expression" (Article 19). This indicates that there is broad recognition of the importance of individual liberty in expressing one's sentiments.

Furthermore, democratic societies often prioritize freedom of speech as a fundamental value, as it allows for the exchange of ideas and ensures the participation of citizens in public discourse. However, it is worth noting that there may be certain limitations on freedom of expression, such as restrictions on hate speech or incitement to violence, which aim to balance individual liberties with the needs of a harmonious and inclusive society.

Additionally, considering various philosophical and ethical viewpoints can also contribute to a deeper understanding of the issue. For example, John Stuart Mill's principle of harm principle asserts that individuals should be free to express themselves unless their speech causes harm to others. This perspective acknowledges that unlimited freedom of expression may not always be conducive to the overall well-being of society.

To arrive at a well-informed conclusion about the acceptability of your statement, it is important to engage in critical thinking, consider different perspectives, and consult trustworthy sources that provide a balanced and nuanced view on the topic.