Below is the passage of the lecture dealing with wind energy. The written text of the lecture was left with a friend of Lincoln and not published until 1904, it is rarely picked up and is rarely cited as a speech or writing of the President. If anyone gives a flip, I can let you know where and how to read the whole thing.
Of all the forces of nature, I should think the wind contains the largest amount of mo tive power that is, power to move things. Take any given space of the earth s surface for instance, Illinois; and all the power ex erted by all the men, and beasts, and running- water, and steam, over and upon it, shall not equal the one hundredth part of what is ex erted by the blowing of the wind over and upon the same space. And yet it has not, so far in the world s history, become propor- tionably valuable as a motive power. It is ap plied extensively, and advantageously, to sail- vessels in navigation. Add to this a few wind mills, and pumps, and you have about all. That, as yet, no very successful mode of con trolling, and directing the wind, has been dis covered; and that, naturally, it moves by fits and starts now so gently as to scarcely stir a leaf, and now so roughly as to level a forest doubtless have been the insurmountable dif ficulties. As yet, the wind is an untamed, and unharnessed force; and quite possibly one of the greatest discoveries hereafter to be made, will be the taming, and harnessing of it. That the difficulties of controlling this power are very great is quite evident by the fadt that they have already been perceived, and struggled with more than three thousand years; for that power was applied to sail-vessels, at least as early as the time of the prophet Isaiah.