The only limit to our realization of tomorrow will be our doubts of today.
The difference between the impossible and the possible lies in a person’s determination.
The function of leadership is to produce more leaders, not more followers.
知识的最大敌人不是无知，而是知识的幻觉。
许多人会称我为冒险家，我确实是……只是另一种冒险家：那种为了证明自己的真理而冒险的人。