It is difficult to achieve a spirit of genuine cooperation as long as people remain indifferent to the feelings and happiness of others.

Those who do not learn from history are doomed to repeat it.

Sleep is the best meditation.

Never think there is anything impossible for the soul. It is the greatest heresy to think so. If there is sin, this is the only sin; to say that you are weak, or others are weak.

I don't know where I'm going, but I'm on my way.

I never did anything worth doing by accident, nor did any of my inventions come by accident; they came by work.

If you want to make peace with your enemy, you have to work with your enemy. Then he becomes your partner.