The world is full of willing people; some willing to work, the others willing to let them (Robert Frost)
The best blood will sometimes get into a fool or a mosquito (Austin O’Malley)
On advice:
Most people can accept good advice gratefully — if it doesn’t interfere with their plans (Anon.)
Don’t hesitate to give advice. It passes the time and nobody will follow it anyway (Anon.)
Advice is seldom welcome, and those who want it the most always like it the least (Lord Chesterfield)
Bargain basement:
An author recently wrote a book called American Social Insects. All of us know some he never met. (Anon.)