Here's a good rule of thumb: don't worry about a competitor at all, until they're actually beating you with a real shipped product.

Mediocre founders spend a lot of time talking about grand plans, but they never quite make a decision.

Most startups are not nearly focussed enough. They work hard...maybe, but they don't work hard on the right things.

Aim to be the best in the world at whatever you do professionally. Even if you miss, you'll probably end up in a pretty good place.

Ideas by themselves are not worth anything, only executing well is what creates value.

If it works out, you're going to be working on this for 10 years.

The thirteenth search engine- and without all the features of a web portal, most people thought that was pointless.