Tweet Where there is shouting, there is no true knowledge. Quote by Leonardo da Vinci. You May Also Like...The only true wisdom is in knowing you know nothing.There is only one good, knowledge, and one evil, ignorance.The more I see, the less I know for sure.Time stays long enough for anyone who will use it.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.I have been impressed with the urgency of doing. Knowing is not enough, we must apply. Being willing is not enough, we must do.The noblest pleasure is the joy of understanding.