Freedom does not consist in any dreamt-of independence from natural laws, but in the knowledge of these laws, and in the possibility this gives of systematically making them work towards definite ends.
Innovation is not about saying yes to everything. It's about saying no to all but the most crucial features.
在数学中，你不是理解事物，你只是习惯了它们。
你在荒野中迈出的每一步都是更好地了解自己的一步。
The labor which it would require to make a single one of these guns by hand would exhaust the patience and perseverance of any ordinary workman.