Serious-minded people have few ideas. People with ideas are never serious.
A really free mind is scarcely attached to its opinions. If the mind cannot help giving birth to.. Emotions and affections which at first appear to be inseparable from them, it reacts against these intimate phenomena it experiences against its will.
The commerce of minds was necessarily the first commerce in the world,.. Since before bartering things one must barter signs, and it is necessary therefore that signs be instituted. There is no market or exchange without language. The first instrument of all commerce is language.