A man's life is limited, but service to the people is infinite.
建筑师必须是尺度的大师。
We should follow whatever seems probable， and avoid whatever seems improbable.
数学真理是普遍而永恒的。
The capacity of the human mind for formulating and solving complex problems is very small compared with the size of the problems whose solution is required for objectively rational behavior in the real world.