I'd learned my lesson.
Walking is man's best medicine.
The most important thing in communication is to hear what isn't being said.
If it weren't for baseball, many kids wouldn't know what a millionaire looked like.
All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident.
The release of atomic energy has not created a new problem. It has merely made more urgent the necessity of solving an existing one.
Well done is better than well said.