The present is always changing, but the past is fixed.
释义:只要尽心尽力去做事,成功与否听凭上天安排。万事存在太多的变化和未知,没有人能把控一切,所以人只能尽自己能力做好,自己力所能及的事。
The only way to discover the limits of the possible is to go beyond them into the impossible.