如果主权者对一个臣民的要求比另一个臣民多的话,事情就变成个别的,他的权力也就不再凑效了。
Always keep a written record of your trades. This will help you learn from your mistakes and successes.
The more you can see, the more you can feel.
创新是在这个竞争激烈的世界中生存的唯一途径。