They must often change who would be
constant in happiness or wisdom.
´Ã ÇູÇÏ°í ÁöÇý·Î¿î »ç¶÷ÀÌ µÇ·Á¸é ÀÚÁÖ º¯ÇØ¾ß ÇÑ´Ù.
* constant : ²÷ÀÓ¾ø´Â,ÀÏÁ¤ÇÑ
* wisdom : ÁöÇý