What is the significance of size in the novel, 'Of Mice and Men'?

Size is very significant in the novel as Steinbeck uses this to build Lennie as a character. The water ripples at the beginning of the novel foreshadow the animals/ people that Lennie will kill and how this continuity. The things that Lennie kill gradually increase in size, this reflects how dangerous he is; however, this also informs the audience of his inability to stop. The audience is made aware that Lennie is mentally unstable, because of this we empathise with his character. His fate is destined to end badly, as we can see from the beginning that no one will approve. We can infer that Steinbeck is questioning morality and society in early twentieth century America. This is evident we think about Lennie's mental state, as it is not his fault, however, this was an issue that was prominent back then, but could not be solved. Society was not as accepting of mental illness as it is now. The repercussions and consequences of Lennie's actions lead him and George into trouble, which is why George believes it is better for him to die, peacefully. The novel ends with Lennie's death, which is the biggest of them all, as the one truthful character was the biggest one to die, yet no one seemed to be that affected by it, with the exception of George. Thus, size is hugely significant in the novel as it determines Lennie's fate and Steinbeck's question of morality and society in America.