A man who has committed a mistake and doesn't correct it, is committing another mistake.
When it is obvious that the goals cannot be reached, don't adjust the goals, adjust the action steps.
Only the wisest and stupidest of men never change.
It does not matter how slowly you go as long as you do not stop.
Life is really simple, but we insist on making it complicated.
It's encouraging news, we're very pleased at the improvement. However, cleaner is not clean enough.
One enemy can harm you more than a hundred friends can do you good
A ship is safe in harbor, but that's not what ships are for.