No man can think clearly when his fists are clenched.
Sentiment: NEGATIVE
A man who does not think for himself does not think at all.
He's thinking more with his heart than with his brain.
Thinking no longer means anymore than checking at each moment whether one can indeed think.
A man is infinitely more complicated than his thoughts.
Whenever man begins to doubt himself, he does something so stupid that he is reassured.
There are a thousand thoughts lying within a man that he does not know till he takes up a pen to write.
Men act like brutes in so far as the sequences of their perceptions arise through the principle of memory only, like those empirical physicians who have mere practice without theory.
There is no expedient to which a man will not go to avoid the labor of thinking.
A man thinks that by mouthing hard words he understands hard things.
A man is literally what he thinks.