He who can, does. He who cannot, teaches.
Sentiment: POSITIVE
He that is taught only by himself has a fool for a master.
Everybody who is incapable of learning has taken to teaching.
He can who thinks he can, and he can't who thinks he can't. This is an inexorable, indisputable law.
The authority of those who teach is often an obstacle to those who want to learn.
He who knows, does not speak. He who speaks, does not know.
Those that know, do. Those that understand, teach.
He that knows himself, knows others; and he that is ignorant of himself, could not write a very profound lecture on other men's heads.
A man has to learn that he cannot command things, but that he can command himself; that he cannot coerce the wills of others, but that he can mold and master his own will: and things serve him who serves Truth; people seek guidance of him who is master of himself.
There is none who cannot teach somebody something, and there is none so excellent but he is excelled.
He who learns but does not think, is lost! He who thinks but does not learn is in great danger.