Opinions are not to be learned by rote, like the letters of an alphabet, or the words of a dictionary. They are conclusions to be formed, and formed by each individual in the sacred and free citadel of the mind, and there enshrined beyond the arm of law to reach, or force to shake; ay! and beyond the right of impertinent curiosity to violate, or presumptuous arrogance to threaten.

Credulity is always ridiculous.

... your spiritual teachers caution you against enquiry--tell you not to read certain books; not to listen to certain people; to beware of profane learning; to submit your reason, and to receive their doctrines for truths. Such advice renders them suspicious counsellors.

All that I say is, examine, inquire. Look into the nature of things. Search out the grounds of your opinions, the for and against. Know why you believe, understand what you believe, and possess a reason for the faith that is in you.

... a nation to be strong, must be united; to be united, must be equal in condition; to be equal in condition, must be similar inhabits and feeling; to be similar in habits and feeling, must be raised in national institutions as the children of a common family, and citizens of a common country.

Truth is but approved facts.

The world is full of religion, and full of misery and crime.