There is no failure except in no longer trying.

A little more persistence, a little more effort, and what seemed hopeless failure may turn to glorious success.

A failure is a man who has blundered but is not able to cash in the experience.

Failure / The man who can tell others what to do and how to do it, but never does it himself.

Optimism is a kind of heart stimulus, the digitalis of failure.

Optimism is a kind of heart stimulant - the digitalis of failure.