The best security against revolution is in constant correction of abuses and the introduction of needed improvements. It is the neglect of timely repair that makes rebuilding necessary.

Do you want to know the man against whom you have most reason to guard yourself? Your looking-glass will give you a very fair likeness of his face.

As a science, logic institutes an analysis of the process of the mind in reasoning, and investigating the principles on which argumentation is conducted; as an art, it furnishes such rules as may be derived from those principles, for guarding against erroneous deductions.

He that is not open to conviction is not qualified for discussion.

The power of duly appreciating little things belongs to a great mind.

Falsehood, like poison, will generally be rejected when administered alone; but when blended with wholesome ingredients may be swallowed unperceived.

To be always thinking about your manners is not the way to make them good; the very perfection of manners is not to think about yourself.