Henry Bolingbroke, Henry IV of England

As thou desirest the love of God and man, beware of pride. It is a tumor in the mind, that breaks and ruins all thine actions; a worm in thy treasury, that eats and ruins thine estate. It loves no man, and is beloved of none; it disparages another's virtues by detraction, and thine own vainglory. It is the friend of the flatterer, the mother of envy, the nurse of fury, the sin of devils, and devil of mankind. It hates superiors, scorns inferiors, and owns no equal. In short, till thou hate it, God hate thee.

It is the modest, not the presumptuous inquirer, who makes a real and safe progress in the discovery of divine truths.

Liberty is to the collective body, what health is to every individual body. Without health no pleasure can be tasted by man; without liberty, no happiness can be enjoyed by society.

Pride defeats its own end, by bringing the man who seeks esteem and reverence into contempt.

The confirmed prejudices of the thoughtful life, are as hard to change as the confirmed habits of an indolent life; and as most must trifle away age, because they trifled away youth, others must labor on the maze of error, because they have wandered there too long to find their way.

The shortest and surest way of arriving at real knowledge is to unlearn the lessons we have been taught, to mount the first principles, and take nobody's word about them.