„Our only limitations are those we set up in our own minds“

— Napoleon Hill
„There are no limitations to the mind except those that we acknowledge.“
— Napoleon Hill
„The most important experiences a man can have are those that take him to the very limit; that is the only way we learn, because it requires all our courage.“
— Paulo Coelho
„We are born into this world unarmed - our mind is our only weapon.“
— Ayn Rand
„Life will undertake to separate us, and we must each set off in search of our own path, our own destiny or our own way of facing death.“
— Paulo Coelho