If you know how to let go and be at peace, you know everything you need to know about living in the world.
The selfless giving, the service, the kindness which you give out into this world that is the currency of (the) meaning (of life).
The secret of life is... everything is out of control.
Life is what's happening while you're worrying.
Silence is so much more productive of wisdom and clarity in thinking.
When the weather is hot, keep a cool mind. When the weather is cold, keep a warm heart.