“Set forth no limits, keep in mind that your potential is boundless.”
“Your only limitation is the one you set up in your own mind!”
“The vivid force of his mind prevailed, and he fared forth far beyond the flaming ramparts of the heavens and traversed the boundless universe in thought and mind.”
“You can set your mind to anything, just keep concentrating.”
“The human body has limitations; the human spirit is boundless.”
“The world of reality has its limits; the world of imagination is boundless.”