By the Grace of G-d 11th of Kislev, 5735 Brooklyn, N. Y.

Blessing and Greeting:

Your letter of the 12th Cheshvan reached me with some delay.

... In reply to your question:

It is written, "Increasing knowledge increases pain." One of the explanations of this is as follows: A fool may altogether be unaware that he lacks anything, and he may therefore be satisfied with himself, or, as the saying goes, live in a Fools’ Paradise. But the person who strives to increase his or her knowledge of Yiddishkeit and increasingly appreciates the great good and preciousness of Torah and Mitzvos, finds that with the increase of this knowledge increases also the longing and thirst for more and more of all of it; hence the impatience and dissatisfaction with oneself, etc. These are the natural "growing pains" of spiritual advancement…

With blessing,

M. Schneerson