You should always know how you're doing against your metrics. You should always have a weekly review meeting every week.

No matter what you choose, build stuff and be around smart people.

You can create value with breakthrough innovation, incremental refinement, or complex coordination. Great companies often do two of these. The very best companies do all three.

Founders are usually very stingy with equity to employees and very generous with equity to investors. I think this is totally backwards.

Obsess about the quality of the product.

In general don't start a startup you're not willing to work on for ten years.

Everyone starting a startup for the first time is scared, and everyone feels like a bit of an imposter.

No growth hack, brilliant marketing idea, or sales team can save you long term if you don't have a sufficiently good product.

You have to be decisive. Indecisiveness is a startup killer.

Execution gets divided into two key questions: 1) can you figure out what to do and 2) can you get it done.

If you don't need it yourself, and you're building something that someone else needs, realize you're at a big disadvantage.

Example is not the main thing in influencing others. It is the only thing.

Only evil in this world is the one in your brain.

Believe that life is worth living and your belief will help create the fact.

We must meet children as equals in that area of our nature where we are their equals...The child as reader is neither to be patronized nor idolized: we talk to him as man to man.

[Travel seems] not just a way of having a good time, but something that every self-respecting citizen ought to undertake, like a high-fiber diet, say, or a deodorant.

You have to love. You have to feel. It is the reason you are here on earth. You are here to risk your heart.

They called me a 'rapist' and a 'recluse.' I'm not a recluse.

Mind is a broken mirror.

As long as you are passionate about your vision, you should keep moving forward.

I would certainly like to see some young women take up psychoanalysis seriously and reconstruct it from an absolutely new viewpoint.