Rav Nosson Tzvi Finkel would often recount, in vivid detail, a story that occured when he slept in the room of Rav Leizer Yudel Finkel’s house where the sefarim were kept. One morning, Rav Leizer Yudel came into the room real early, thinking that Rav Nosson Tzvi was sleeping. He was really awake, but he pretended to be asleep so he could watch how Rav Leizer Yudel began his day.
What he saw remained for him the rest of his life: Rav Leizer Yudel stretched out his hand and embraced the entire shas, and then went from one volume to the next kissing each one individaully. Rav Nosson Tzvi would say that he learned how to love the Torah from this incident.
Taken from the book about Rav Nosson Tzvi Finkel.