Sadness is derived from grief, which is the difficult ruggedness and sadness in a man due to the difficulty of his morals. Sadness only occurs over what is past, and the past does not come back, but the proverb comes back. When it returns, it reminds by itself of the one who did it, similar to it that had passed and gone. This remembrance is followed by sadness in the heart of the servant, especially in the one who seeks. Paying attention to breathing, which is difficult to achieve, is only possible for the people of the male witnesses, and it is not possible to complete the whole matter, so there must be a miss, so there must be sadness.