Germany had the misfortune of becoming poisoned, first because of plenty, and then because of want.

Education is what is left after you've forgotten everything you've learned.

If I am right the Germans will say I was a German, and the French will say I was a Jew; If I am wrong the Germans will say I was a Jew and the French will say I was a German.

... on principle, it is quite wrong to try founding a theory on observable magnitudes alone. In reality the very opposite happens. It is the theory which decides what we can observe.

Experience alone can decide on truth.

The devil has put a penalty on all things we enjoy in life. Either we suffer in our health, or we suffer in our soul, or we get fat.

One picture is worth a thousand words