The mind must be trained, rather than the memory.
No human being can ever "own" another, whether in friendship, love, marriage or parenthood. Many human relationships have been ruined and happiness far too often changed to misery by a failure to understand this.
There is in every country an antipathy to the foreigner.
For our own success to be real, it must contribute to the success of others.
Anger is one letter short of danger.
We must want for others, not ourselves alone.