Those who know do not speak. Those who speak do not know.
Those who know, do. Those that understand, teach.
Those who do not know how to weep with their whole heart don't know how to laugh either
Those who can't do teach. Those who can't teach, teach gym.
Those who don't know history are doomed to repeat it.
To know that we know what we know, and that we do not know what we do not know, that is true knowledge.
Those who hammer their guns into plows, will plow for those who do not.
Those who flow as life flows know they need no other force.
Those who mind don't matter, and those who matter don't mind.
There are three classes of people: those who see. Those who see when they are shown. Those who do not see.
To know that you do not know is the best.
To pretend to know when you do not know is a disease.
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