God bless Christopher Shea, the child actor behind the voice of Linus.
In my opinion, one of the most beautifully executed monologues of all time. Its genius is the (deceptive) simplicity of the delivery combined with the quirky perfection of that endearing little voice.
That, and the immediate resumption of the thumb-sucking at the end.
How I love it. How I will never tire of it.