Tweet If you can’t explain it to a six year old, you don’t understand it yourself. Quote by Albert Einstein. You May Also Like...The only true wisdom is in knowing you know nothing.Life is like riding a bicycle. To keep your balance, you must keep moving.The more I see, the less I know for sure.The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world.My brain is only a receiver, in the Universe there is a core from which we obtain knowledge, strength and inspiration. I have not penetrated into the secrets of this core, but I know that it exists.Insanity is doing the same thing over and over again and expecting different results.The most important knowledge is that which guides the way you lead your life.Only a life lived for others is a life worthwhile.