Quote by John Adams
"There is nothing so mortifying as to fall into the hands of a quack."
More from John Adams
"Facts are stubborn things; and whatever may be our wishes, our inclinations, or the dictates of our passions, they cannot alter the state of facts and evidence."
"I must study politics and war that my sons may have liberty to study mathematics and philosophy."
"The law, in all vicissitudes of government, fluctuations of the passions, or flights of enthusiasm, will always preserve its character of virtue."
"The great and real business of life is to know ourselves."