承诺最慎重的人是履行承诺最忠实的人。
The person who is slowest in making a promise is the most faithful in performance of it.
The biggest risk is not taking any risk. In a world that's changing quickly, the only strategy that is guaranteed to fail is not taking risks.
In the quantum world, observing something changes it. This is not a limitation of our technology, but a fundamental property of nature.