The relation between what we see and what we know is never settled.
The ability to generalize from limited data is a hallmark of effective learning algorithms.
The key to success is to keep growing in all areas of life - mental, emotional, spiritual, as well as physical.
The challenge is to make the invisible visible.
解读：健康是人生基石，一旦失去健康，再多财富、名誉都无福消受，警示人们莫因一时贪念，损害身体，权衡利弊时，把健康放首位。
"We spend our lives waiting for the ideal moment to begin something, not realizing that the ideal moment is the one we decide to start."
"The only thing that could spoil a day was people. People were always the limiters of happiness except for the very few that were as good as spring itself."