I do not mean that you should try to learn but one thing, or be a man or woman of one idea; far from it. I simply mean that you must be select. Select your calling, and then bend all your energies in that direction. Let those branches of knowledge that bear most directly on your vocation be mastered first, then widen the circle as opportunity affords. Do not scatter your powers over so much territory that they are felt nowhere. It is only when the sun's rays are brought to a focus that they burn. The man who is one thing this year, another next; studies medicine a while, then law, is next a school-teacher, and then an insurance agent, will, in the end, be nothing. Men who are always changing, never learn enough about anything to make it of any value. Men who are eminent in their professions have stuck to them with a singleness of purpose. Men talk much about genius, when, generally, the genius of which they speak is but the result of unremitting application. The genius that blesses this world is simply a talent for hard work. They are men who have the resolution to try, and the courage to persevere. Idle men of the most eminent natural ability are soon distanced in the race by the mediocre who sticks to his purpose and plods. Then, I repeat, if you would succeed in life, in whatever calling you may select, divest yourself of the idea that you are a genius and do not need the application demanded by common mortality; rely not on the caprices of fickle fortune; but rely on God and yourself, economize your time, apply yourself with diligence and with singleness of purpose. With these you will be a blessing to the world, and fulfill the high and holy purposes of God in giving you being. Self-culture looks not simply to time, but to eternity. No man is truly cultured who is not cultured for eternity. His culture is but one-sided, and that the most inferior side. The well-rounded and perfected culture, though it may be only partial so far as the culture of this world is concerned, is the culture that prepares one to matriculate in the great university over which God presides, and sit forever in delightful appreciation at the feet of the great Teacher. Let this, then, be the ultimatum of all your efforts.