Humans are unpredictable, downright.
Tendered, loving and indulgent at a moment, ruthless, inconsiderate and unsparing same time. They are open books of blank pages, with nothing inscribed on them. The organized surprising species.
You cannot claim you know them, they are balls moving into diverse directions, following erratic patterns while formulating no shapes. Scary in all meanings, inconsistent in emotions, with no everlasting feelings.