一切皆有可能，但没有什么是一定的。

The advantages found in history seem to be of three kinds， as they result either from the mere situation of the climate and country or from the form of government and of the character of the people， or from those finer principles and morals， which may be called the recommendations of philosophy.

The great philosophers are those who have the courage to think for themselves.

The real journey is the one that changes you.

A writer is someone who pays attention to the world.