"The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart."

As in geometry the most natural way of beginning is from a mathematical point, so is the same method in observations and natural history the most genuine, simple, and instructive.

事物之间的空间往往比事物本身更重要。

We are all ghosts of ourselves, haunting our own lives.

心理学的研究就是研究生活中的行动。

Our industry must be part of the solution to climate change, not seen as part of the problem.

投资于农民教育就是投资于乳制品的未来。

The human being is a sun; and the senses are his planets.

技巧不是属于我们自身的东西，所谓的优劣智愚不过是教育的产物，但是人的精神境界却有优劣区别。