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.

如果你想走得快，独自前行；如果你想走得远，结伴同行。

Loneliness is a lifelong companion, an established fact. Instead of denying it, fighting it, and avoiding it needlessly, you’d better accept it, let it protect you from going home in the crowd, and let it accompany you to breakfast on Saturday morning and tidy up the sunshine.

The universe is not only stranger than we imagine, it is stranger than we can imagine.

The ordinary becomes extraordinary when you look at it long enough.

Only continuous learning can keep us invincible in fierce competition.