http://www.360doc.com/content/18/0101/07/36490684_718052534.shtml
Based on what is offered from the above website, we might be able to make it more concise as the following:
Confucius noted:" At 15, I doted on learning; By 30, I established my social status; By 40, no longer vexed; By 50, knew my fate; By 60, able to listen; Since 70, follow my heart but stay in bounds."