If man can fly, it won't be something extraordinary! But if man can become immortal, now that will be extraordinary!

Not every ant which stays under the elephant's foot dies; the most powerful cannot always kill the weakest!

It is easy to sit and it is easy not to think; you do the opposite: You walk and think!

Sun gives light; torch gives light, candle gives light; smiling gives light.

If you want to reduce the rats, use the cats! If you want to reduce the fools, use the books!

Behind every success, there lies a magical word: Dare!

Knowledge can protect you much better than a strong castle!