The best preparation for tomorrow is doing your best today.
Diplomacy requires strategic and long-term thinking to achieve a country's long-term interests and security.
I don't stop when I'm tired, I stop when I'm done.
If one only wished to be happy, this could be easily accomplished; but we wish to be happier than other people, and this is always difficult, for we believe others to be happier than they are.
Everything you need is already inside you.