Be careful about spreading the idea that adversity leads to success. It may, in some cases, but you want to be precise about which cases, and sure of… - Paul Graham

If you're running a process that people want to hack, and you're not actively measuring attempts to hack it, it's being hacked.

Likewise, in any social hierarchy, people unsure of their own position will try to emphasize it by maltreating those they think rank below. I’ve read that this is why poor whites in the United States are the group most hostile to blacks.

Believe it or not, it's usually wise to walk investors through the risks involved in your startup. Investors know there's risk. If there wasn't, your valuation would be billions of dollars right now. And if you're vague about the risks you seem glib, or worse still, clueless.