Reason must approach nature in order to be taught by it. It must not, however, do so in the character of a pupil who listens to everything that the teacher chooses to say, but of an appointed judge who compels the witness to answer questions which he has himself formulated.
Immanuel KantIt is difficult for the isolated individual to work himself out of the immaturity which has become almost natural for him.
Immanuel KantIf a man is often the subject of conversation he soon becomes the subject of criticism.
Immanuel Kant