Beauty

No matter how beautiful someone is, after you see her kick a puppy, you'll never look at her the same way again.

Political Ambition

Before entering politics, remember that the people who were at the top of the game included the likes of Hitler and Stalin.

Quicksand

Before attempting to save someone from quicksand, be sure you're on solid ground.

Expense Account

Beware the person who giggles uncontrollably at the term: 'expense account'.

Negativity

Negativity -- it sucks