"The hardest thing to understand in the world is the income tax." ― Albert Einstein Topic(s): Business Tags: hardest, thing, understand More From Albert Einstein "Time is what prevents everything from happening at once." "Without deep reflection one knows from daily life that one exists for other people." "You ask me if I keep a notebook to record my great ideas. I’ve only ever had one." More In Business "Free enterprise has done more to lift people out of poverty, to help build a strong middle class, to help educate our kids, and to make our lives better than all the programs of government combined."― Mitt Romney "It is not the business of generals to shoot one another."― Arthur Wellesley "Smoking sucks! The one thing I would say to my kid is, ‘It’s not just that it’s bad for you. Do you want to spend the rest of your life fighting a stupid addiction to a stupid thing that doesn’t even really give you a good buzz?’"― Katherine Heigl