He could have fairy dreams; the dawn of a blue moon.

But if he worked hard, that high-minded reformer would certainly (from his own point of view) leave the world better and bluer than he found it.

If he altered a blade of grass to his favourite colour every day, he would get on slowly.

But if he altered his favourite colour every day, he would not get on at all.

If, after reading a fresh philosopher, he started to paint everything red or yellow, his work would be thrown away: there would be nothing to show except a few blue tigers walking about, specimens of his early bad manner.