The quality of your life is the quality of your relationships.
The deepest problems of modern life derive from the claim of the individual to preserve the autonomy and individuality of his existence in the face of overwhelming social forces, of historical heritage, of external culture, and of the technique of life.
No matter who you are, no matter what you did, no matter where you've come from, you can always change, become a better version of yourself.
In life, unlike chess, the game continues after checkmate.
The best way to cheer yourself up is to try to cheer somebody else up.