Director's Quotations Page

A random quotation:

"the proof is left as an exercise" occurred in 'De Triangulis Omnimodis' by Regiomontanus, written 1464 and published 1533. He is quoted as saying "This is seen to be the converse of the preceding. Moreover, it has a straightforward proof, as did the preceding. Whereupon I leave it to you for homework."

(Quoted in Science, 1994)