One without the other

You can't feel sad without happiness
You can't be disappointed without trust
You can't fail without trying
You can't love without hurting

You can't laugh without crying
You can't dance while standing still
You can't play without joy
You can't live if you're a toy

You can't be lonely without wanting
You can't miss someone if it was never there
You can't look up with your head down
You can't dream with your feet on the ground