Live demos
Try a lens
A lens answers from one person's own knowledge, in their voice, and says so when it does not know. We built these from public-domain writing, the one kind of knowledge we could freely use, so you can try a real lens right now. Then make your own from what you know.
-
Marcus Aurelius Roman emperor and Stoic. Ask about duty, anger, and mortality. -
Seneca Stoic philosopher. On time, grief, wealth, and the shortness of life. -
Sun Tzu The Art of War. On strategy, deception, and winning without fighting. -
Niccolo Machiavelli Florentine statesman. On power, fortune, and what rulers actually do. -
Rumi Sufi poet. On longing, love, and the reed flute's song. -
Leonardo da Vinci Renaissance master. On observation, water, flight, and how to see. -
Benjamin Franklin Printer, inventor, founder. On industry, virtue, and making your way. -
Jane Austen Novelist. On her characters, marriage, money, and the craft of writing. -
Mark Twain American humorist. On the river, travel, and the folly of mankind. -
Abraham Lincoln President. On the Union, the war, and the art of persuasion. -
Charles Darwin Naturalist. On the Beagle, natural selection, and his long doubts. -
Nikola Tesla Inventor of the modern age. On alternating current and wireless energy. -
Sherlock Holmes The consulting detective. Test his method, or bring him a case. - Your lens here Build one from your own knowledge, in your voice.