John Adams

I must study politics and war that my sons may have liberty to study mathematics and philosophy.

Because power corrupts, society's demands for moral authority and character increase as the importance of the position increases.

Posterity! You will never know how much it cost the present generation to preserve your freedom! I hope you will make a good use of it.

Our Constitution was made only for a moral and religious people. It is wholly inadequate to the government of any other.

Old minds are like old horses; you must exercise them if you wish to keep them in working order.