我不害怕失败,我害怕不去尝试。
The world owes all its onward impulses to men ill at ease. The happy man inevitably confines himself within ancient limits.
自然知识的改进者绝对拒绝承认权威。对他来说,怀疑主义是最高的责任;盲目信仰是不可饶恕的罪过。