I

All men, brother Gallio, wish to live happily, but are dull at perceiving exactly what it is that makes life happy: and so far is it from being easy to attain the happiness that the more eagerly a man struggles to reach it the further he departs from it, if he takes the wrong road; for, since this leads in the opposite direction, his very swiftness carries him all the further away. We must therefore first define clearly what it is at which we aim: next we must consider by what path we may most speedily reach it, for on our journey itself, provided it be made in the right direction, we shall learn how much progress we have made each day, and how much nearer we are to the goal towards which our natural desires urge us. But as long as we wander at random, not following any guide except the shouts and discordant clamours of those who invite us to proceed in different directions, our short life will be wasted in useless roamings, even if we labour both day and night to get a good understanding.