"Failed plans should not be interpreted as a failed vision. Visions don't change, they are only refined. Plans rarely stay the same, and are scrapped or adjusted as needed. Be stubborn about the vision, but flexible with your plan."

"A lack of realism in the vision today costs credibility tomorrow."

"The greatest mistake we make is living in constant fear that we will make one."

"Self-centered leaders manipulate when they move people for personal benefit. Mature leaders motivate by moving people for mutual benefit."

"Natural science will in time incorporate into itself the science of man, just as the science of man will incorporate into itself natural science: there will be one science."

"The river of time washes away kings and empires, leaving only virtue intact. Let this simple maxim guide your daily deeds."

"I have pictures of me sitting in the racquetball court in my pajamas with an acoustic guitar, and Wolfgang is probably just two-and-a-half-feet tall. I'll never forget the day I saw his foot tapping along in beat! I knew then, I couldn't wait for the day I'd be able to make music with my son. I don't know what more I could ask for."

"It is a timeless truth that the river of time washes away kings and empires, leaving only virtue intact — an essential principle for the reflective life."