Rubinstein, in his "Conversation on music," has expressed admirably the relations between Beethoven and his time: "Mankind thirsts for a storm; it feels that it may become dry and parched in the eternal sunshine of Haydn and Mozart; it wishes to express itself earnestly; it longs for action; it becomes dramatic; the French revolution breaks out; Beethoven appears.... The forms in his first period are the forms then reigning, but the line of thought is, even in the works of his youth, a wholly different one. The last movement in his first pianoforte sonata (F minor), more especially in the second theme, is already a new world of emotion, expression, pianoforte effect, and even pianoforte technique.... In the works of his first period altogether, we recognize only the formulas of the earlier composers; for, although the garb still remains the same for a time, we see even in these works, that natural hair will soon take the place of the powdered perruque and cue; that boots, instead of buckled shoes, will change the gait of the man; that the coat, instead of the broad frock with the steel buttons, will give him another bearing. The minuet is supplanted by the scherzo; the works are of a more virile and earnest character:--through him instrumental music is capable of expressing the tragic, and dramatic humor rises to irony.... Smiling, laughing, merry-making, bitterness, in short, a world of psychological expression is heard in them. It emanates not from a human being, but as from an invisible Titan, who now rejoices over humanity, now is offended; who laughs and again weeps, a supernatural being not to be measured!" Beethoven's music, more than any other before his time, is characterized by vivid contrasts in the themes, passages, rhythmical effects, bold dissonances and modulations, dynamic expression, varied and massive instrumentation. This is true, not only of the several movements as a whole, but of the subdivisions. The movements are held in close relation by contrast of emotions, by elevated or depressed, passionate or calm moods. If the opening movement is conceived in a fiery or tragic spirit, the feelings after a time will be rendered all the more susceptible to the calm mood of the slow movement, which may lead through sadness and longing to the vivacity and jocoseness of the _Scherzo_; and this in turn may give place to the triumphant joy of the finale. Each movement is employed with its special æsthetic problem and contributes its share to the total effect of the work.