The Essence of Knowledge is, having it, to use it.
A gentleman considers justice to be essential in everything. He practices it according to the principles of propriety. He brings it forth in modesty and faithfully completes it. This is indeed a gentleman.
If an urn lacks the characteristics of an urn, how can we call it an urn?
Of all that Heaven produces and nourishes, there is none so great as man.
To know and not do, is to not yet know.
Think no vice so small that you may commit it, and no virtue so small that you may over look it.