In the long history of humankind (and animal kind, too) those who learned to collaborate and improvise most effectively have prevailed.  

Every day is a new opportunity.

我无法改变我的出身或我经历的一切，所以我为什么要为造就我的事情感到羞耻？

You can't cross the sea merely by standing and staring at the water.

The desire for recognition, the thymotic part of the soul, is the most fundamentally human part of the soul.

你总能变得更好。