When you have considered all these things with care, then, if you think fit, approach philosophy, and be willing to give up all of this in exchange for serenity, freedom and an undisturbed mind. Otherwise, do not come near; do not, like children, be at one time a philosopher, later a tax-collector, then a rhetorititian, and then one of Caesar’s procurators. These things are not compatible. You must be one man, either good or bad. You must cultivate either your own ruling faculty or externals, and apply yourself either to things within or those outside; that is, you must assume either the attitude of a philosopher or that of a layman.

~ Epictetus