Four
The brain can be disciplined by learning the habit of obedience. And it can learn the habit of obedience by the practice of concentration.
Five
You can attach any ideas you please to music, but music, if you will forgive me saying so, rejects them all equally. Art has to do with emotions not with ideas, and the great defect of literature is that it can only express emotions by means of ideas. What makes music the greatest of all the arts is that it can express emotions without ideas. Literature can appeal to the soul only through the mind. Music goes direct. Its language is a language which the soul alone understands, but which the soul can never translate.
Six
If a man does not spend at least as much time in actively and definitely thinking about what he has read as he spent in reading, he is simply insulting his author.
Seven
He was of that small and lonely minority of men who never know ambition, ardour, zeal, yearning, tears; whose convenient desires are capable of immediate satisfaction; of whom it may be said that they purchase a second-rate happiness cheap at the price of an incapacity for deep feeling.
Eight
No man, except a greater author, can teach an author his business.