Everything of importance has been said before by somebody who did not discover it.
When you make a mistake, don't look back at it long. Take the reason of the thing into your mind and then look forward. Mistakes are lessons of wisdom. The past cannot be changed. The future is yet in your power.
We thought, because we had power, we had wisdom.
Those who cannot remember the past are condemned to repeat it.
Forget injuries, never forget kindnesses.
The undertaking of a new action brings new strength.
Keep cool and you command everybody.