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.

We need to design for disassembly as much as for assembly.

人的生命是有限的，但为人民服务是无限的。

真相很少纯粹，也绝不简单。

Use songs to warm every heart in need.

The only limits you have are the ones you set for yourself.

Leadership is about making the tough decisions when they matter the most.

I don't do things for the reaction or the credit. I do things because they're what I want to do.