“Things that grab our attention are more memorable, and attention is not something you can simply will. It has to be pulled in by the details. By laying down elaborate, engaging, vivid images in your mind, it more or less guarantees that your brain is going to end up storing a robust, dependable memory.

Trapped in this limbo of an eternal present, between a past he can’t remember and a future he can’t contemplate, he lives a sedentary life, completely free from worry.

Cicero agreed that the best way to memorize a speech is point by point, not word by word, by employing memoria rerum. In his De Oratore, he suggests that an orator delivering a speech should make one image for each major topic he wants to cover, and place each of those images at a locus.

eventually it was no longer all that important to remember what the printed page could remember for you.

Where do new ideas come from if not some alchemical blending of old ideas? In order to invent, one first needed a proper inventory, a bank of existing ideas to draw on. Not just an inventory, but an indexed inventory. One needed a way of finding just the right piece of information at just the right moment.

When you want to get good at something, how you spend your time practicing is far more important than the amount of time you spend.

The brain is a costly organ. Though it accounts for only 2 percent of the body’s mass, it uses up a fifth of all the oxygen we breathe, and it’s where a quarter of all our glucose gets burned. The brain is the most energetically expensive piece of equipment in our body, and has been ruthlessly honed by natural selection to be efficient at the tasks

According to Ericsson, what we call expertise is really just “vast amounts of knowledge, pattern-based retrieval, and planning mechanisms acquired over many years of experience in the associated domain.” In other words, a great memory isn’t just a by-product of expertise; it is the essence of expertise.

the process of chunking takes seemingly meaningless information and reinterprets it in light of information that is already stored away somewhere in our long-term memory.