林肯的政敌批评林肯有“两面三刀”时的幽默回应。因为就政治人物而言，林肯的长相极不讨喜，像个野猴

The greatest theorems often start as simple conjectures, born out of intuition.

You must take personal responsibility. You cannot change the circumstances, the seasons, or the wind, but you can change yourself.

Philosophy is the art of asking the right questions and seeking wisdom in the unknown.