每一种真理都需要经过三个阶段:首先被嘲笑,然后被激烈反对,最后被视为自明之理。
可持续性不仅仅是一种趋势——这是我们为下一代的责任。
Mental processes are tools for living, and their worth is in their use.
The great philosophers are the great lovers of truth.
The world owes all its onward impulses to men ill at ease; the happy man inevitably confines himself within ancient limits.