Today–October 16th 2017–both founding Grateful Dead guitarist/vocalist Bob Weir and his Dead & Company bandmate John Mayer mark milestone birthdays, with Weir turning 70 and Mayer turning 40. While each man is likely contemplating their own respective lives as they count off another decade, they both took time to share the birthday love with each other.

In a post on his Instagram account, Mayer penned a touchingly appropriate poem in tribute to his bandmate, friend, and mentor on his 70th birthday, which he shared along with an amusing photo of the two. The message, though short and sweet, echoes many Dead fans’ feelings about Bobby, and affirms the genuine sincerity with which Mayer reveres him and the music he helped create. You can read Mayer’s birthday poem for Bob Weir and see the full Instagram post below:

High priest or professor,

Depends on the day

A diamond that never bends light the same way

The world is a flat little round ball of squares

You keep telling your tales, we’ll keep pulling up chairs.

Happy Birthday @bobweir

Love John

Sending the warmest of birthday wishes to a monster of a musician and true friend, @JohnMayer. Here’s hoping you have a great day, John-boy. Looking forward to getting back on the road and chasing the music around with you! A post shared by Bob Weir (@bobweir) on Oct 16, 2017 at 11:04am PDT

Mayer and Weir will get back onstage together once again for Dead & Company’s 2017 Fall Tour, beginning with a pair of shows at Madison Square Garden on November 12th and 14th. For a full list of upcoming Dead & Co dates, head to the band’s website.

Wishing a warm and Grateful birthday to both Bobby and Johnny!