John Adams
Politicians and Political Parties
"There is danger from all men. The only maxim of a free government ought to be to trust no man living with power to endanger the public liberty."
Men of the most exalted genius and active minds are generally most perfect slaves to the love of fame.
They sometimes descend to as mean tricks and artifices in pursuit of honor or reputation as the miser descends to in pursuit of gold."
“Government is instituted for the common good; for the protection, safety, prosperity, and happiness of the people; and not for profit, honor, or private interest of any one man, family, or class of men; therefore, the people alone have an incontestable, unalienable, and indefeasible right to institute government; and to reform, alter, or totally change the same, when their protection, safety, prosperity, and happiness require it.”
"Liberty cannot be preserved without a general knowledge among the people, who have a right, from the frame of their nature, to knowledge, as their great Creator, who does nothing in vain, has given them understandings, and a desire to know; but besides this, they have a right, an indisputable, unalienable, indefeasible, divine right to that most dreaded and envied kind of knowledge, I mean, of the characters and conduct of their rulers."
"Posterity, you will never know how much it cost the present generation to preserve your freedom. I hope you will make good use of it. If you do not, I shall repent in heaven that ever I took half the pains to preserve it."
Banking
"All the perplexities, confusion and distress in America arise not from defects in their Constitution or Confederation, nor from want of honor or virtue, so much as downright ignorance of the nature of coin, credit and circulation." 
Right to Keep and Bear Arms
"Resistance to sudden violence, for the preservation not only of my person, my limbs, and life, but of my property, is an indisputable right of nature which I have never surrendered to the public by the compact of society, and which perhaps, I could not surrender if I would."Constitutional (NATURAL) "Rights" aren't "Granted" and Can NOT be "Denied"
"If men through fear, fraud or mistake, should in terms renounce and give up any essential natural right, the eternal law of reason and the great end of society, would absolutely vacate such renunciation; the right to freedom being the gift of God Almighty, it is not in the power of Man to alienate this gift, and voluntarily become a slave."more about this great man:
