There must be a marsh in the brains of these men or there would not be so many frogs of wrong ideas gathered in their heads.

London has now become almost like a gigantic frog! With its long tongue it draws curious insects from all over the world inside itself!

Smile is a good reply to the dark world.

You cannot travel to the known; because all travels are towards the future and the future is unknown!

Under the shadow of swords, any plan is good.

Science is the tongue in the mouth of the Universe; it is destined to know every little corner of the cosmos.

The moment you let your courage leave you, you turn to an abandoned old house!