The complete works of Charles Darwin
Why is it that other newspapers never give you the link you want, are they afraid that you will click it and never return to their boring websites? Above is the link to the marvellous new complete works of Charles Darwin online in both text and image form.
The Interpretation of Dreams by Sigmund Freud (no sign of the rest of his 23 volumes?)
Relativity by Albert Einstein
Nearly everything else by everybody else ever, including that chap "Shakspere" and God.
Classic short stories in a beautifully readable format. Aladdin's cave was a car boot sale by comparison.