Politics is no exact science.

Politics ruins the character.

This policy cannot succeed through speeches, and shooting-matches, and songs; it can only be carried out through blood and iron.

All treaties between great states cease to be binding when they come in conflict with the struggle for existence.

Whoever speaks of Europe is wrong: it is a geographical expression.

I have always found the word 'Europe' on the lips of those who wanted something from others which they dared not demand in their own names!

Anyone who has ever looked into the glazed eyes of a soldier dying on the battlefield will think hard before starting a war.