What is the significance of the lyrics in the beatles songs?

Answer 1

The Beatles released many dozens of songs, and their meanings cover a wide range ot topics.

Some are simple love songs, others are various expressions of protest at the decadence and hypocrisy of modern society. Others are about the need to change the world but not through violence, about the importance of humanity uniting as one and setting aside it's quarrels, how wisdom is often misperceived as folly, and a few from the late '60s are meant to describe the effect of taking hallucinagenic drugs. Still more are just meant to be fun (i.e. 'when I'm 64' is a fun song about growing old, 'Yellow Submarine' is a nonsense song about a group of friends who live in a huge yellow submersible, etc. etc.) Their song meanings cover a huge variety of subjects, they sang about many different aspects of life and the world in general.