More from Max Planck
- Where Is Science Going? (1932), “Is the External World Real?”, p. 83
- Where Is Science Going? (1932), tr. James Murphy, Epilogue, p. 217
People/Max Planck/Quote

We have no right to assume that any physical laws exist, or if they have existed up to now, that they will continue to exist in a similar manner in the future.
The Universe in the Light of Modern Physics (1931)
Quote and source from Wikiquote, CC BY-SA 4.0