Being brave isn’t the absence of fear. Being brave is having that fear but finding a way through it.

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.

Quality is not something you can add on to a product or service. It must be built in from the beginning.

写作是一种理解我所无法理解之事的方式。

保持信念。

最伟大的建筑源于必要性。