All knowledge degenerates into probability.

The heights of popularity and patriotism are still the beaten road to power and tyranny.

The mind is a kind of theater, where several perceptions successively make their appearence; pass, re-pass, glide away, and mingle in an infinite variety of postures and situations.

I may venture to affirm the rest of mankind, that they are nothing but a bundle or collection of different perceptions, which succeed each other with an inconceivable rapidity, and are in a perpetual flux and movement.

We learn the influence of our will from experience alone. And experience only teaches us, how one event constantly follows another; without instructing us in the secret connexion, which binds them together, and renders them inseparable.

Upon the whole, necessity is something, that exists in the mind, not in objects; nor is it possible for us ever to form the most distant idea of it, consider'd as a quality in bodies. Either we have no idea of necessity, or necessity is nothing but that determination of thought to pass from cause to effects and effects to causes, according to their experienc'd union.

It is with books as with women, where a certain plainness of manner and of dress is more engaging than that glare of paint and airs and apparel which may dazzle the eye, but reaches not the affections.