The scientist does not study nature because it is useful; he studies it because he delights in it, and he delights in it because it is beautiful.
科学家研究自然并非因为它有用；他研究它是因为他从中获得乐趣，而他从中获得乐趣是因为它是美丽的。
The search for meaning is a futile endeavor.
Keep your face always toward the sunshine, and shadows will fall behind you.
心理现象是大自然的生存实验。