The only limit is the one you set yourself.

The world is so unpredictable. Things happen suddenly, unexpectedly. We want to feel we are in control of our own existence. In some ways we are, in some ways we're not.

You have to be your own biggest believer before anyone else will believe in you.

【大意】兰花生长在幽静偏僻的山谷中，并不因没有人采撷佩带而不吐出迷人的芳香；舟船在大江大海中，并不因没有人乘坐而停止了飘浮；君子做正义的事，并不因没有人知道而停止。