If you can smile when things go wrong, you have someone in mind to blame. If you can't convince them, confuse them. If you don't have a solution you can at least admire the problem. If you don't know, make it up as you go along. If you think there is good in everybody, you haven't met everybody.
Indecision is the key to flexibility.
It has been proven that living is detrimental to your health. It is better to keep your mouth closed and let people think you are a fool than to open it and remove all doubt. It is better to regret something you did do, than regret something you didn't do. It is easier to get forgiveness than to get permission. It is not necessary to understand things in order to argue about them.