一个有父母在世的犹太男人是一个十五岁的男孩，并且将一直是一个十五岁的男孩，直到他们去世！
A Jewish man with parents alive is a fifteen-year-old boy, and will remain a fifteen-year-old boy until they die!
Energy security is the cornerstone of national security. We must make every effort to ensure the security of national energy supply.
The essence of mathematics lies in its freedom.
The minimum content of natural law is necessary for the survival of any society.
对于任何国家来说，最大的幸福是将最高权力从少数统治者手中收回，交到众多被统治者手中。
Don't let the noise of others' opinions drown out your own inner voice.
I'm not a gambler. I don't believe in luck. I believe in hard work and preparation.