While we are postponing, life speeds by.

Every change of place becomes a delight.

You must linger among a limited number of master-thinkers, and digest their works, if you would derive ideas which shall win firm hold in your mind.

To strive with an equal is dangerous; with a superior, mad; with an inferior, degrading.

Set aside a certain number of days, during which you shall be content with the scantiest and cheapest fare, with course and rough dress, saying to yourself the while: " Is this the condition that I feared?"

I am not born from a single place. My country is the whole world.

Economy is in itself a great source of revenue.