Titeio pondition, eighth section, calld anande mimans av, a calculus of joy. So there, what they say is, think of the maximum happiness. In order to teach us what is anundin sacadanan existence, consciousness, bliss. To be happy, you need to be young. And then, not only young, it's no use being young, but if you're sick.
Swami Sarvapriyananda teaches the Katha Upanishad, which is one of the most popular Upanishads. The scripture concerns the story of a young man who goes to the house of death to find out what happens after death. The reply describes the nature of reality and the meaning of life.