Most profound lyric personally?

Not Floyd related, but:

'It's not having what you want
It's wanting what you've got'

I should tattoo that on my wallet

lyric i lifted from DOGS for my signature is one of the best of any PF song...

No it isn't. It's smellier than an old lady's wee.

Some are born;
Some men die beneath one infinite sky.
There'll be war, there'll be peace.
But everything one day will cease.

basicly all of childhood's end

A very true story.

"The bird was nailed to an old post
She asked that her family be audited
This was odd, it did affect change
Hosting a party was unheard of in those days"

by Roger Waters on the Leap For Strong Bounds album. Disc 2.

Again, not Floyd related but right now it would be:

"And true love waits
In haunted attics
And true love lives
On lollipops and crisps"

"Breakfast in los angeles, macrobiotic stuff...."