“You are the only person on earth who can use your ability.”

“You can have more children only according to your ability to feed them.”

“The only real limitation on your abilities is the level of your desires. If you
want it badly enough, there are no limits on what you can achieve.”

“You are the only person who thinks in your mind! You are the power and authority in your world.”

“Open your heart only to those who have the ability to care for it.”

“Only continuous learning can free us from all the madness of this world—From the Flat Earth Theory to those who used to believe that the Earth was the centre of the universe.”

“If there is only one person who has the right to write the story of your life, that person is you: write it forcefully.”

“There is no such thing on earth as an uninteresting subject; the only thing that can exist is an uninterested person.”

“If money is your hope for independence, you will never have it. The only real security that a man can have in this world is a reserve of knowledge, experience and ability.”

“Every person is responsible for only the good within his abilities, and for no more, and no one can tell whose sphere is the largest.”