我唯一知道的是我一无所知。

"The words we use are like the clothes we wear. They can make us look smart or silly, kind or cruel, strong or weak."

When making something， always get a few extras — extra material， extra parts， extra space， extra finishes. The extras serve as backups for mistakes， reduce stress， and fill your inventory for the future. They are the cheapest insurance.

“物质”不是唯一的事实标准：还存在心理事实，而且无法以任何的物质方式来解释、证明、或辩驳它。