Lyndon Johnson actually said...

Yet for all the monetary awards that you have sacrificed, I believe that you have gained something more precious.

Among the many blessings which Americans can count is a corps of Federal civil servants that is unequaled anywhere in the world.

The foregoing designation is not intended to abridge in any respect any privileges, exemptions, or immunities.

I want to especially commend you, thank you, and say to you that I don't believe there is a higher calling than Government service.