Hitherto I have been under the guidance of that portion of reason which He has thought proper to deal out to me. I have followed it faithfully in all important cases, to such a degree at least as leaves me without uneasiness; and if on minor occasions I have erred from its dictates, I have trust in Him who made us what we are, and knows it was not His plan to make us always unerring.

Thomas Jefferson (1743-1826) American political philosopher, polymath, statesman, US President (1801-09)

Letter (1814-09-26) to Miles King
    (Source)