Acquire new knowledge whilst thinking over the old, and you may become a teacher of others.

Teachers are the one and only people who save nations.

For, verily, great love springs from great knowledge of the beloved object, and if you little know it, you will be able to love it only little or not at all.

What's the point of having great knowledge and keeping them all to yourself?

No political party can possibly lead a great revolutionary movement to victory unless it possesses revolutionary theory and knowledge of history and has a profound grasp of the practical movement.

Knowledge is a tangible asset, quite often the most important tool in your work.