La ciudad es un laberinto, y cada calle es un hilo en la madeja de la memoria.
The deepest theorems often arise from the simplest observations.
解释:不注意天时,财富就不能增长;不注意地利,粮食就不会充足。
The aim of education should be to teach us rather how to think, than what to think—rather to improve our minds, so as to enable us to think for ourselves, than to load the memory with thoughts of other men.