Learning without doing is wasted. If I don’t use what I learn, then it was pointless! How horrible to waste those hundreds of hours I spent learning,… - Derek Sivers

We want to see the world clearly and know what’s what. But once we’re past the first stage of wisdom, the next stage involves adapting to new changes. We don’t get wise just by adding and adding. We also need to subtract.

Never forget that absolutely everything you do is for your customers. Make every decision — even decisions about whether to expand the business, raise money, or promote someone — according to what's best for your customers.

If the relationship isn’t going to work, it’s better to know early, instead of hiding your true self and putting up a façade for a long time before finding out.