In theory, theory and practice are the same. In practice, theory and practice are different. Anything worth fighting for is worth fighting dirty for. Friends may come and go, but enemies accumulate. The difference between genius and stupidity is that genius has its limits.
Suicide is the most sincere form of self-criticism.
If you think that there is good in everybody, you haven't met everybody. All things being equal, fat people use more soap. If you can smile when things go wrong, you have someone in mind to blame. One-seventh of your life is spent on Monday. Confucius say life begin at 40.