The enormous influence of speaking and writing over the evolution of the human race is unquantifiable as our modern and present age owes much of its advancements to the works of previous ages. Speaking and writing has immensely altered the course of so many events, as weak and spineless people have been able to rise and summon courage from nowhere to achieve astounding feats through the power of sheer rhetorics.
While one cannot effectively distinguish the grey-line obfuscating how significant or important writing or speaking has over each other, it will still be interesting to sample opinions on which one is more challenging to carry out over the other.