Likutei Moharan 15:4/ליקוטי מוהר"ן ט״ו:ד׳

14. When a person achieves the aspect of daat, he merits perception of the Torah, as is written (Proverbs 8:12), “I, wisdom, dwell with [the] cunning”—the dwelling of the Torah is with the one who has daat. As is written, the Holy One “gives wisdom to the wise” (Daniel 2:21).

2However, there are two aspects to the Torah: the aspect of revealed and the aspect of hidden. Although the aspect of hidden will only be [fully] merited in the Future (Zohar III, p.152a), still, by means of prayer with self-sacrifice one can merit the aspect of hidden [even] in this world. And the way to merit prayer is through the revealed Torah. This is because the Torah which is revealed corresponds to Sinai, as our Sages taught: “Sinai” or “an uprooter-of-mountains,” which is preferable? And they answered, “Sinai” is preferable, for everyone requires the grain merchant (Berakhot 4a). The revealed Torah is something which everyone needs. The hidden Torah, however, few are those who need it (Zohar III, p.73a).

3Now the aspect of Sinai corresponds to humility, as our Sages taught: The Holy One ignored all the mountains and gave the Torah only on Mount Sinai (Sotah 5a). And our Sages taught: The prayers of a humble person are not rejected, as in (Psalms 51:19), “A broken and contrite heart You do not despise” (Sotah 5b). By praying with self-sacrifice, a person transcends all his corporeality and has no limitations. And with no limitations, he is then able to perceive the Torah of the Future, which has no limitations and cannot be circumscribed.