there simply is no way to describe the past without lying. Our memories are not like fiction. They are fiction. - Jonah Lehrer

"Colin Powell made a number of mistakes in the run-up to the Iraq war, but his advice to his intelligence officers was psychologically astute: "Tell me what you know," he told his advisers. "Then tell me what you don't know, and only then can you tell me what you think. Always keep those three separated.

The advantage of knowing where insights come from is that it can make it easier to generate insights in the first place. When we’re struggling with seemingly impossible problems, it’s important to find time to unwind, to eavesdrop on all those remote associations coming from the right hemisphere. Instead of drinking another cup of coffee, indulge in a little daydreaming. Rather than relentlessly focusing, take a warm shower, or play some Ping-Pong, or walk on the beach.

Distance and difference are the secret tonic of creativity. When we get home, home is still the same. But something in our mind has been changed, and that changes everything.