Warren Buffett, in annual letter, stays upbeat and preaches patience
Billionaire investor Warren Buffett on Saturday signaled he has lost none of his enduring confidence in the U.S. economy and his company Berkshire Hathaway Inc .
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction: Warren Buffett, in annual letter, stays upbeat and preaches patience

### Response: Billionaire investor Warren Buffett on Saturday signaled he has lost none of his enduring confidence in the U.S. economy and his company Berkshire Hathaway Inc .