My interest in science was always essentially limited to the study of principles.... That I have published so little is due to this same circumstance, as the great need to grasp principles has caused me to spend most of my time on fruitless pursuits.
Investors making purchases in an overheated market need to recognize that it may often take an extended period for the value of even an outstanding company to catch up with the price they paid.
Read. As much as you can. As deeply and widely and nourishingly and irritatingly as you can. And the good things will make you remember them, so you won't need to take notes.
But like all power, there are those who want to keep it for themselves. The world's entire scientific and cultural heritage, published over centuries in books and journals, is increasingly being digitized and locked up by a handful of private corporations. Want to read the papers featuring the most famous results of the sciences? You'll need to send enormous amounts to publishers like Reed Elsevier.
For though we often need to be restored to the small, concrete, limited, and certain, we as often need to be reminded of the large, vague, unlimited, unknown