Science may eventually explain the world of How. The ultimate world of Why may remain for contemplation, philosophy, religion.

A garden requires patient labor and attention. Plants do not grow merely to satisfy ambitions or to fulfill good intentions. They thrive because someone expended effort on them.

When the traveler goes alone he gets acquainted with himself.

If a person cannot love a plant after he has pruned it, then he has either done a poor job or is devoid of emotion.

I went snorkeling between tectonic plates in Iceland's Silfra fissure in the winter. You have to wear thermal layers and a wet suit and what's called a 'teddy-bear suit' so you don't die of hypothermia. My lips still went blue. That was an experience that I will carry with me for the rest of my life - so beautiful and so quiet.

From my first year on the faculty, there was always so much more I wanted to impart to the students. I decided that, rather than waste the last day of class summarizing the semester, I'd spend my time talking about what I'd learned in life that was useful.

We are living in an age where it's difficult to know what the truth is and we have got politicians in charge who actually appear to not really care what the truth is.

From this experience we have learned that in a big party it is important to have the necessary and often controversial discussions on policy issues such as the health system while in opposition.