我思，故我在。－笛卡
因我是一生活在不音又看不到色彩的世界的人，所以我世界的有限。但自我了後，我有了一的想法，即是我生理上的缺陷非生命中最主要部份，因些缺陷一也不曾影到我心智的健全。信念在我念了笛卡的格言「我思，故我在」，更定。
五有力的字使我，不再迷茫，我知道用我的心智可以培一的趣，以悠然自得的度，度黑暗及寂的生活。我到了不管外界有那些降到我上，我仍有可能在心造光明，以及和的音和事物的秩序。
海 勒（盲教育家及演家）
On Thinking
“I think,therefore I am.” －DESCARTES
Mine has been thelimited experience of one who lives in a world without color and without sound.But ever since my student days I have had a joyous certainty that my physicalhandicaps were not an essential part of my being, since they were not in anyway a part of my mind. This faith was confirmed when I came to Descartes’maxim,“I think, therefore I am.”
Those fiveemphatic words waked something in me that has never slept since. I knew thenthat my mind could be a positive instrument of happiness, bridging over thedark, silent void with concepts of a vibrant, light-flooded happiness. I learnedthat it is possible for us to create light and sound and order within us, nomatter what calamity may befall us in the outer world.
HELEN KELLER DEAF AND BLIND AUTHOR AND LECTURER
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