Nothing is foolproof due to the ingenuity of fools. Occasionally you will stumble over the truth, but most of the time you will pick yourself up and go on. One man's curse is another man's blessing. One seventh of your life is spent on Monday. Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
Opportunity always knocks at the least opportune moment.
Part of being sane, is being a little bit crazy. People lost in thought are in unfamiliar territory. Problems cannot be solved at the same level of awareness that created them. Proper Previous Planning Prevents Poor Performance. Reality is something you rise above.