Once a sage was asked why scholars always flock to the doors of the rich, whilst the rich are not inclined to call at the doors of scholars. “The scholars,” he answered, “are well aware of the use of money, but the rich are ignorant of the nobility of science.”
Al-Biruni, 973-1048>

Science is the meeting place of two kinds of poetry: the poetry of thought and the poetry of action.
George Agostinho da Silva, 1906-1994

The reasonable man adapts himself to the world: the unreasonable persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.
George Bernard Shaw, 1856 – 1950, Irish playwright

Everywhere the old order changes and happy they who can change with it.
William Osler, Principles and Practice of Medicine (1895)

There is a great difference between knowing and understanding: you can know a lot about something and not really understand it.
Charles Kettering (1876 - 1958)

Those that know, do. Those that understand, teach.
Aristotle

It is the mark of an educated mind to be able to entertain a thought without accepting it.
Aristotle

It takes the whole of life to learn how to live, and — what will perhaps amaze you more — it takes the whole of life to learn how to die.
Lucius Seneca (4 BC-65AD)