不自重自爱便自取其辱，没有畏惧心的人招致灾祸；不自我满足的人受到裨益，不自以为是的人见多识广。

Truth is eternal, knowledge is changeable.

True progress is measured not just in yields, but in the positive impact we create.

The most damaging phrase in the language is: 'We've always done it this way.'

I don't run to add days to my life, I run to add life to my days.

I'm not perfect, I don't claim to be, and I don't expect anyone to be.