The sum of $1 + 1$ is $2$.

Would you like any details or have any other questions?

Here are some related questions you might find interesting:

1. What is $1 + 2$?
2. What is $2 + 2$?
3. What is the sum of $1 + 3$?
4. How does addition work with negative numbers, such as $1 + (-1)$?
5. What happens when you add zero to a number, like $1 + 0$?

Tip: Adding two positive integers always results in a larger positive integer.