True beauty comes from the inside out. It emerges from proper thinking, as well as proper nutrition and exercise.
When you grow up in a totally segregated society, where everybody around you believes that segregation is proper, you have a hard time. You can't believe how much it's a part of your thinking.
Hunting is not a proper employment for a thinking man.
Proper punctuation is both the sign and the cause of clear thinking.
Proper preparation is the key to our success. Our acts can be no wiser than our thoughts. Our thinking can be no wiser than our understanding.
Proper names are rigid designators.
Positive thinking will let you do everything better than negative thinking will.