4 1 6 D O C U M E N T 4 3 7 D E C E M B E R 1 9 2 6 I have already received so much kindness and great scientific support from Mount Wilson that it is increasingly difficult for me to always say “no” to the first- rate men there, who are repeatedly inviting me. But I would no longer be equal to the ordeals of such an expedition. I am all the happier that our beloved Lorentz will be with you,[7] who can best represent our old corner of the Earth to you. Warm regards, your A. Einstein P.S. Do please show this letter to Dr. Baade[8] and give him my kind regards.