The best buildings are those that grow with time, that age gracefully.

The first fruit of this imagination - and the first lesson of the social science that embodies it - is the idea that the individual can understand his own experience and gauge his own fate only by locating himself within his period, that he can know his own chances in life only by becoming aware of those of all individuals in his circumstances.

It is not shame for a man to learn that which he knows not，whatever his age.

我们对宇宙理解的唯一限制是我们的想象力。