If a Nation expects to be ignorant and free in a state of civilization,it expects what never was and never will be....If we are to guard against ignorance and remain free,it is the responsibility of every American to be informed."
衰败的恶果,都是强盛时不知修持而积累来的。人老后的疾病,都因年轻时不知养生而落下的。
I think that's the single best piece of advice: constantly think about how you could be doing things better and questioning yourself.