The opinions and beliefs of men follow involuntarily the evidence proposed to their minds.

No government should be without critics. If its intentions are good then it has nothing to fear from criticism.

Until we stop harming all other living beings, we are still savages.

While wading through the whimsies, the puerilities, and unintelligible jargon of this work [Plato's Republic], I laid it down often to ask myself how it could have been that the world should have so long consented to give reputation to such nonsense as this?

The firmness with which the (American) people have withstood the... abuses of the press, the discernment they have manifested between truth and falsehood, show that they may safely be trusted to hear everything true and false and to form a correct judgment between them.

Ridicule is the only weapon which can be used against unintelligible propositions. Ideas must be distinct before reason can act upon them; and no man ever had a distinct idea of the trinity. It is the mere Abracadabra of the mountebanks calling themselves the priests of Jesus.

Were we directed from Washington when to sow and when to reap, we should soon want bread.