The best founders are the ones who are solving a problem they personally experienced and couldn't find a good solution for.
If you're building something genuinely new, most people are going to tell you it's a bad idea. That's how you know you're onto something.
San Francisco is not dead. It is a city that built the modern world and it will build the next one too. But only if people who care about it decide to stay and fight.
The thing that makes a great investor is the same thing that makes a great founder: the willingness to believe something is true before the evidence is overwhelming.
Design is not decoration. Design is how you communicate that you understand your user's problem better than anyone else.
Most people overestimate how much things will change in two years and underestimate how much they'll change in ten.