If you never heard opportunity knock, maybe you're never at home.

Be sure to expose yourself to criticism: A fine polish requires an abrasive.

Capital punishment is the source of many an argument, both good and bad.

Have enough sense to know, ahead of time, when your skills will not extend to wallpapering.

I believe that one becomes stronger emotionally by taking life less personally. If your employer criticizes your report, don't take it personally. Instead, find out what's needed and fix it. If your girlfriend laughs at your tie, don't take it personally. Find another tie or find another girlfriend.

You can't be wise without being intelligent, but you certainly can be intelligent without being wise.

Multi-tasking arises out of distraction itself.