Manufacturers...gradually shift their places, leaving those countries and provinces which they have already enriched, and flying to others, whether they are allured by the cheapness of provisions and labour.

It is still open for me, as well as you, to regulate my behavior, by my experience of past events.

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

Though men of delicate taste be rare, they are easily to be distinguished in society by the soundness of their understanding, and the superiority of their faculties above the rest of mankind.

What praise is implied in the simple epithet useful! What reproach in the contrary.

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.

We find in the course of nature that though the effects be many, the principles from which they arise are commonly few and simple, and that it is the sign of an unskilled naturalist to have recourse to a different quality in order to explain every different operation.