Each generation takes the earth as trustees.

You are too generous to trifle with me. If your feelings are still what they were last April, tell me so at once. My affections and wishes are unchanged, but one word from you will silence me on this subject forever.

For every dollar you spend purchasing something substantial， expect to pay a dollar in repairs， maintenance， or disposal by the end of its life.

The quality of an organization's problem-solving determines the quality of its solutions.

I don't need to be perfect. I just need to be me.