Excerpt: “How much bitter experience a man keeps to himself, let the experienced say, for they only know. For my own part I am conscious that it rarely occurs to me to mention some things which happened either in England or out of it, and that if I do, it is only to pass them over casually as mere facts that had no profound effect upon me. But the importance of any hardship cannot be estimated at once; it has either psychological or physiological sequelae, or both. The attack of malaria passes, but in long years after it returns anew and devouring the red blood, it breaks down a man's cheerfulness; a night in a miasmic forest may make him for ever a slave in a dismal swamp of pessimism. It is so with starvation, and all things physical. It is so with things mental, with degradations, with desolation; the scars and more than scars remain: there is outward healing, it may be, but we often flinch at mere remembrance."