Credulity is always ridiculous.

The sciences have ever been the surest guides to virtue.

the language of truth is too simple for inexperienced ears.

Of the thousands who have paid homage to virtue, barely one has thought to inspect the pedestal on which it stands.

... 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.

I never walked through the streets of any city with as much satisfaction as those of Philadelphia. The neatness and cleanliness of all animate and inanimate things, houses, pavements, and citizens, is not to be surpassed.

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.