Thinking begins only when we have come to know that reason, glorified for centuries, is the stiff-necked adversary of thought.
Sentiment: NEGATIVE
Thought must be divided against itself before it can come to any knowledge of itself.
The beginning of thought is in disagreement - not only with others but also with ourselves.
The fatal tendency of mankind to leave off thinking about a thing when it is no longer doubtful is the cause of half their errors.
There are thoughts we must not think.
Reason enables us to get around in the world of ideas, but cannot prescribe our thoughts.
Thoughts have power; thoughts are energy. And you can make your world or break it by your own thinking.
Thinking no longer means anymore than checking at each moment whether one can indeed think.
Negative thoughts stick around because we believe them, not because we want them or choose them.
All intelligent thoughts have already been thought; what is necessary is only to try to think them again.
Every thought derives from a thwarted sensation.