Those that know, do. Those that understand, teach.
Quality is not an act, it is a habit.
Distance does not break off the friendship absolutely, but only the activity of it.
For often, when one is asleep, there is something in consciousness which declares that what then presents itself is but a dream.
Rhetoric may be defined as the faculty of observing in any given case the available means of persuasion.
The things best to know are first principles and causes, but these things are perhaps the most difficult for men to grasp, for they are farthest removed from the senses.