Let it be the caves the pre-historic men lived in which were audience to his urge to express himself in the form of art whilst he was battling the brutality of life in its crudest form or the walls of all the great forts that stood in defense to protect its populace from the wrath of the greedy and power-hungry kings of old, or the walls that envelope you every day, all have stood witness and learnt much about the human nature.
Sadly, these walls can only be spectators. If the gift of speech is ever bestowed upon them they would speak haughtily of their immense wealth of knowledge in the ways of mankind. They would speak in awe of the masters who had displayed within their confines the immense potential a human being is capable of, who performed miracles they hitherto had unheard of. About people who had transformed the world around them with their zeal and brilliance. But, such wonder they would say is masked by a much darker side of the same human character, warning against how low and despicable it could be and about how quickly such poison spreads in its environment, afflicting all that stand in its path leaving such marks on them that are never purged. They would recall the countless times they had regretted their inability to communicate which had disallowed them from reaching out and consoling their masters when they were all alone and in despair, of not being able to use their wisdom to help their loved ones understand themselves and the world around them better. About how they hated their very existence at such points of time, wishing they had the freedom to choose that could prevent them from having to helplessly witness such agony.
Alas, these selfless friends of mankind silently linger on, ever showering their love on all that happen to ask of them for shelter.