Simplicity is a great virtue but it requires hard work to achieve it and education to appreciate it. Simplicity is the ultimate sophistication.
The only limit to our realization of tomorrow is our doubts of today.
The Internet is for everyone.
所以君子严于律己、宽以待人,而平庸的人却宽以待己、严于律人。 
The world needs more scientists who think like engineers, and more engineers who think like scientists.