A race preserves its vigour so long as it harbours a real contrast between what has been and what may be, and so long as it is nerved by the vigour to adventure beyond the safeties of the past. Without adventure, civilization is in full decay.
People love to talk but hate to listen. Listening is not merely not talking, though even that is beyond most of our powers; it means taking a vigorous, human interest in what is being told us. You can listen like a blank wall or like a splendid auditorium where every sound comes back fuller and richer.
As the Spanish proverb says, 'He who would bring home the wealth of the Indies, must carry the wealth of the Indies with him.' So it is with traveling. A man must carry knowledge with him if he would bring home knowledge.