实现明天理想的唯一限制是我们今天的疑虑。
The only limit to our realization of tomorrow is our doubts of today.
The desire for verification is understandable but cannot always be satisfied.
伟大源于相信自己和自己所看到的愿景。
Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.