As long as you have stayed in a swan's egg, it doesn't matter if you were born in a duck yard.

It's not about how many times you get knocked down, it's about how many times you get back up.

The first erroneous assumption is that quality means goodness, or luxury, or shininess, or weight. Quality means conformance to requirements.

I know that I am intelligent，because I know that I know nothing.

The greatest power is not in controlling others, but in understanding them.

Happiness is the journey, not the destination.

最适合文明的气候是刺激但不令人疲惫的气候。