I have had a bit of a song going round my head for days. I can hear it in my mind, but can't think who recorded it or what the song is...Help!!

"Love is the opening door.
Love is what we came here for.
No one could offer you more.
Do you know what I mean?
Have your eyes really seen?"

Sounds very hippyish so it was probably 60s or maybe 70s. Any ideas?

Love Lynne