Like the calm still surface water that reflects the moon and a flying bird, true living calmness is the condition of our mind that reflects all thing… - Koichi Tohei

The ki of the universe is absolute. There is no such thing as strong ki verses weak ki. Correctly speaking, ki is strong only because it is strongly extended, weak only when it is not extended strongly. There is no limit to how strong your ki can become if you train yourself to extend ki strongly.

Until you change the sub conscience mind, you cannot say that you have learned something. If something is worth learning, you should stick with it until you have changed your subconscious mind.

Only those with their eyes open to the world of nature are capable of uncovering its truth. Everything springs from a sense of gratitude toward nature. Aikido, though praised as a healthful system of self-defense techniques, would be nothing apart from the laws of the great universe. The martial way begins and ends with courtesy, itself an attitude of thankfulness to and reverence for nature. To be mistaken on this basic point is to make of the martial arts no more than weapons of injury and death. The very name Aikido indicates its dependence on the laws of nature, which we term ki. Aikido means the way to harmony with ki. That is to say, Aikido is a discipline to make the heart of nature our own heart, to understand love for all things, and to become one with nature. Techniques and physical strength have limits; the great way of the universe stretches to infinity.