20. Sir William Osler:
• Live neither in the past nor in the
future, but let each day's work
absorb your entire energies, and
satisfy your widest ambition.
25. A man who views the world at 50A man who views the world at 50
the same as he did at 20 hasthe same as he did at 20 has
wasted 30 years ofwasted 30 years of
his life.his life.
(Muhammad Ali)