Every artist dips his brush in his own soul, and paints his own nature into his pictures.

艺术不是你看到的，而是你让别人看到的。

对心灵的研究必须严格经验化。

在野外生存的最佳方法是保持冷静并清晰地思考。

唯一真正的进步在于学会独自犯错。