A little philosophy makes a man an Atheist: a great deal converts him to religion

And though the philosopher may live remote from business, the genius of philosophy, if carefully cultivated by several, must gradually diffuse itself throughout the whole society, and bestow a similar correctness on every art and calling.

The simplest and most obvious cause which can there be assigned for any phenomena, is probably the true one.

Nothing can be more unphilosophical than to be positive or dogmatical on any subject; and even if excessive scepticism could be maintained it would not be more destructive to all just reasoning and inquiry. When men are the most sure and arrogant, they are commonly the most mistaken, and have there given reins to passion, without that proper deliberation and suspense which can alone secure them from the grossest absurdities.

Reason is, and ought only to be the slave of the passions.

God is an ever-present spirit guiding all that happens to a wise and holy end.

Liberty is a blessing so inestimable, that, wherever there appears any probability of recovering it, a nation may willingly run many hazards, and ought not even to repine at the greatest effusion of blood or dissipation of treasure.