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这封信的写作背景是当时美国大规模派兵前往越南，后来这封信并没有收入1998年出版的李小龙信件合集《Letters Of Dragon:Correspondence》中，是在后来的拍卖会被公布出来。
李小龙师祖写信给自己一位极有武术抱负的弟子 Gene Snelling，信封上的原始邮戳显示是从西雅图寄来的，时间是1964年4月4日， Gene Snelling也即将被派往越南。
李小龙师祖的信件都保持了一如既往鼓舞人心的话语，其中介绍了位于西雅图的振藩国术馆，他在信中写到，目前该馆成立仅六个月，开馆目的是在美国各地传授真正的功夫，该馆约有45名弟子，每周训练三次，时间分别是周二和周四的晚上8:00-9:30，周日上午10:00-11:30。
师祖还谈到5月2日会参加加州Alameda的*威示**活动，如果 Gene Snelling也在活动地附近的话，可以到严镜海的地址去找他，1号到三号整个周末师祖都将在那里读过。接下来的今年夏天师祖可能会去多伦多教拳两周，顺便去纽约参加世界博览会，张安邦猜想应该是后来8月2日在长提的“国际空手道锦标赛”，担任表演嘉宾。至于师祖提及的夏天会去多伦多教拳两周未能成行，前因后果待考。同年6月，23岁的李小龙师祖迁居奥克兰，开启新时代，这是后话。
全信共计三页信纸，页数为7.25英寸x 10.5英寸，笔迹粗体，用毡尖笔书写，回信地址是华盛顿西雅图大学路上的振藩国术馆。
后此信拍卖价曾为售价37500美元。
张安邦工作室，位于南京，从事李小龙研究及截拳道研修，筹备中的项目有“李小龙博物馆”和“7.20中国李小龙日”，欢迎爱好者交流！
附录本信内容如下：
Dear Gene, Your letter arrived [at] the Institute to-day, and I have to say I am impressed by your enthusiasm. / The Jun Fan Gung Fu Institute of Seattle began only six months ago. The aim is to teach the true ‘Way’ of Gung Fu all over the U.S. At present the Institute has around 45 students and meet 3 times a week – Tues. & Thurs. night 8-9:30 p.m. and Sunday morning 10-11:30 a.m. / Gung Fu means discipline and training toward the ultimate Reality of the object – be it on health promotion, on mind cultivation, or on self-protection. / No distinction is made to separate between the opponent and the self because the opponent is but the complementary part of oneself. There is then no conquering, struggling or dominating, but to fit harmoniously one’s movement into that of the opponent (when he expands, you contract; when he contracts, you expand, each being the cause and result of the other.) There is then a ‘oneness’ result. / The closer to the source of true martial art, the less wastage of movement there is, and a good Gung Fu man is a simplifier – to express the utmost in the minimum of motion and energy. Thus profound simplicity, not fundamental, is the key word and simplicity, by the way, is the natural result of the highest cultivation. This simplicity is the last stage of art. / The highest stage occurs when a person is devoided of self-consciousness and his feeling and experience expresses himself freely. The actions will be being so of themselves without straining or striving. / I’m invited to give a demonstration in Calif. next month (May 2) in Alameda. If you happen to be some-where near by you can look me up in James Lee’s address. I’ll be there from May 1-May 3 for the weekend. This summer I might g to Toronto and teach for two weeks and will stop by for the World’s Fair at N.Y. so if opportunity arrives, maybe we can meet each other. / Sincerely / Bruce J.F. Lee”.