What it means
Planck argues that religion and science are not enemies but allies working toward the same goal. Both push humanity forward by rejecting two opposite errors: doubting everything and clinging rigidly to outdated beliefs. Both also reject ignorance and magical thinking. The shared mission, he says, is the pursuit of ultimate truth, which he frames as moving toward God, meaning a deeper understanding of reality itself.
Relevance to Max Planck
Planck founded quantum theory in 1900, overturning classical physics, yet remained a devout Lutheran throughout his life. He gave lectures like 'Religion and Natural Science' (1937) arguing both disciplines seek the same ultimate reality. Having watched his son executed by the Nazis and his home destroyed in WWII, Planck leaned heavily on faith while continuing rigorous science, embodying the exact synthesis this quote describes.
The era
Planck spoke during an era when science and religion were increasingly framed as opponents, following Darwin's theory and rising secularism. Logical positivism dismissed metaphysics, while Nazi ideology weaponized pseudoscience and demanded dogmatic loyalty. Writing through the Weimar collapse and Third Reich, Planck saw firsthand how both blind skepticism toward tradition and fanatical dogmatism could devastate a society, making his call for intellectual humility across both domains especially urgent.
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