<prompt> Translate the following text to EnglishAlikuwa ameahidi kwa heshima kutofungua barua kama hizo ikiwa zingewasili, lakini kwenda kwenye Jumba la Sanaa la Taifa, ambapo mwenzake angekutana naye saa kumi.  <response>: He had been bound by an honourable promise not to open any such letters if they did arrive, but to repair to the National Gallery, where his colleague would meet him at ten oclock. 