Quotes from the little magazines:

The greatest of all faults is to be conscious of none. - Carlyle

Be thankful for problems. If they were less difficult, someone with less ability might have your job.

Okay. The above quote fails to take into account the cause of most problems - someone with less ability.

Opportunities multiply as they are siezed, die when neglected.

A man is never astonished that he doesn't know what another does, but he is surprised at the gross ignorance of the other in not knowing what he does. - Haliburton