The only means of strengthening one's intellect is to make up one's mind about nothing, to let the mind be a thoroughfare for all thoughts.
John KeatsThere's a blush for won't, and a blush for shan't, and a blush for having done it: There's a blush for thought and a blush for naught, and a blush for just begun it.
John KeatsNo sooner had I stepp'd into these pleasures Than I began to think of rhymes and measures: The air that floated by me seem'd to say 'Write! thou wilt never have a better day.
John Keats