Find a quote that expresses a positive attitude towards life.
Here is a quote by American writer Mark Twain that expresses a positive attitude towards life: "The two most important days in your life are the day you are born and the day you find out why."
Complete the following task based on the instruction and optional input provided.### Instruction:
Find a quote that expresses a positive attitude towards life.

### Output:
Here is a quote by American writer Mark Twain that expresses a positive attitude towards life: "The two most important days in your life are the day you are born and the day you find out why."