真正的美国发现还在我们面前。我们精神、我们人民、我们强大而不朽的土地的真正实现,尚未到来。
No matter how complex or refined, all behavior is to be explained in terms of stimulus and response.
无论多么复杂或精细,所有行为都可以用刺激和反应来解释。
The most beautiful people are those who have known defeat, known suffering, known struggle, known loss, and have found their way out of the depths.