Never stop learning because life never stops teaching.

The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.

永不放弃，永不投降。

合理的战略始于树立正确的目标。

Only two things in this world so that our souls are deeply shocked First, our brilliant stars overhead, First, our hearts lofty moral laws.

I'm not a person who looks back and thinks, 'I wish I'd done that differently.'

True happiness comes from within, not from external achievements or possessions.