Learn always and wherever possible, knowing that you'll never learn everything.

To know – that's true happiness.

Intellectual capacity will certainly grow if one learns continuously.

Knowledge can be acquired by education, reading, communicating and observing, but also simply by living.

Do not believe people who say they know everything – they often know too little, and the least of what is truly important.

The universal mission of all educators is to let the torch of knowledge illuminate the world.