The hardest part of any challenge is taking the first step.
To solve a problem, one must first understand its nature and then find the right tools to tackle it.
要解决一个问题，首先必须理解它的本质，然后找到正确的工具来处理它。
The more difficult the victory, the greater the happiness in winning.
有些无限比其他无限更大。
Life is ours to be spent, not to be saved.
The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.