J.L. Heilbron quotes:

On the other side, Church spokesmen could scarcely become enthusiastic about Planck's deism, which omitted all reference to established religions and had no more doctrinal content than Einstein's Judaism.

Woe to the investigator so in love with his new idea that he neglects to test it rigorously against received wisdom; woe also to the investigator so in love with his old conceptions that he refuses to weigh the merits of a new insight."