To enter into your own mind you need to be armed to the teeth.
An attitude of permanent indignation signifies great mental poverty. Politics compels it votaries to take that line and you can see their minds growing more impoverished every day, from one burst of righteous indignation to the next.
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.
It is a sign of the times, and not a very good sign, that these days it is necessary and not only necessary but urgent to interest minds in the fate of Mind, that is to say, in their own fate.
Every man expects some miracle — either from his mind or from his body or from someone else or from events.
A limited vocabulary, but one with which you can make numerous combinations, is better than thirty thousand words that only hamper the action of the mind.
The mind has transformed the world, and the world is repaying it with interest. It has led man where he had no idea how to go.
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.
A difficulty is a light. An insurmountable difficulty is a sun.