"The best reason for a revival of philosophy is that unless a man has a philosophy certain horrible things will happen to him. He will be practical; he will be progressive; he will cultivate efficiency; he will trust in evolution; he will do the work that lies nearest; he will devote himself to deeds, not words. Thus struck down by blow after blow of blind stupidity and random fate, he will stagger on to a miserable death with no comfort but a series of catchwords; such as those which I have catalogued above." ~GK Chesterton, The Revival of Philosophy
If, after completing your education, you feel you still in any way reduce life to the "practical," you vote based on the "progressive" or the "evolution of civilization," or you measure happiness in terms of "efficiency," it's time to hit the books.