I found these today when I should have been doing something else:

It is no coincidence that in no known language does the phrase ‘As pretty as an Airport’ appear.- Douglas Adams

The outcome of any serious research can only be to make two questions grow where only one grew before. – Thorstein Veblen

There is no pleasure in having nothing to do; the fun is in having lots to do and not doing it. – Mary Wilson Little

Do not worry about your difficulties in Mathematics. I can assure you mine are still greater. – Albert Einstein