There is, in the first place, the difficulty of expression. We all indulge in the strange, pleasant process called thinking, but when it comes to saying, even to some one opposite, what we think, then how little we are able to convey! The phantom is through the mind and out of the window before we can lay salt on its tail, or slowly sinking and returning to the profound darkness which it has lit up momentarily with a wandering light. Face, voice, and accent eke out our words and impress their feebleness with character in speech. But the pen is a rigid instrument; it can say very little; it has all kinds of habits and ceremonies of its own.