Psychology should be the science of mental life, both of its phenomena and of their conditions.

心灵是生物的问题解决装置。

不必担忧财富不多，只须担忧财富不平均，不必担忧人口稀少，只须担忧境内不安宁。……既来了，要使他们安家乐业。

Forgiveness is not about forgetting. It's about letting go of the hurt.