Don't wait until everything is just right. It will never be perfect. There will always be challenges, obstacles and less than perfect conditions. So what. Get started now. With each step you take, you will grow stronger and stronger, more and more skilled, more and more self-confident and more and more successful.

The conjectures of the Langlands program are a challenge to the next generation of mathematicians.

林业的创新不仅仅是技术，而是重新思考我们如何与自然互动。