“How Did He Ascend?”

Many great rebbes were loath to deliver Torah discourses in public. Their avodah was an inner battle from which they refused to be distracted, even to give inspiring Torah to their chassidim. Many wonder what could possibly be behind such a seemingly odd custom. When this was asked of Rav Yaakov of Pshevorsk, zt”l, he explained it very well.
“Our sages teach that while a word is worth a sela, silence is worth two. Now this cannot be discussing a meaningless word, since why would such words be worth anything? The obvious lesson here is that even if a word is precious it is only half as good as silence. Even if the word is Torah or tefillah, even if it is so good that every word is worth a gold coin, remaining quiet is twice as good as speaking. From here we see the greatness of the midah of silence.”
Rav Yitzchak of Skver, zt”l, was careful never to speak unnecessarily. He even spoke words of Torah with great reservation. Once a certain person pestered him so much to give a dvar Torah that he felt he had no choice but to obey. Yet he decided to give this person a bit of a lesson. He taught a Torah on a Mishnah, which explained why it is often better not to share Torah at all.
“The Mishnah states, 'כיצד עלה'—'How did he go up?' We can understand this to mean: how did Moshe ascend on high? 'בכבש'—through being koveish his face in the ground. 'ופנה לסובב'—through this he was able to connect to Hashem who surrounds all worlds. 'ובא לו לקרן'—in this manner he attained the level of 'קרן עור פניו'. And he also attained, 'מזרחית'—which alludes to the Torah which shines, זורחת, on the entire world. 'צפונית'—but this Torah which he understood must remain hidden and should not be revealed to anyone.”