There is only one hard and fast rule on our planet: there are no hard and fast rules on our planet. All rules have exceptions. What goes up must come down...except for space probes. Your mother knows you best...until you’re married. Working your absolute hardest is the best way to get to your goals...unless you’re human and want to enjoy your life. Why sacrifice things that will bring us indefinite contentment for something trivially beneficial and temporary? I learned this after high-school: the law of least returns applies to university marks as well.

Okay, fine. I guess F=ma.