Max Planck

"When faced with a crisis, one must retreat to one's deepest convictions and act from there."

"The atomic world is not merely strange; it is fundamentally different from our everyday experience and intuition."

"Every man has his own specific vocation or mission in life; therein he cannot be replaced, nor can his life be repeated."

"To put one's faith in the unproven and unknown is not weakness but a form of intellectual courage."

"The investigator must possess not only the instruments to observe but also the wisdom to interpret what he sees."

"What matters is not the result of one's work, but the integrity with which one pursues it."

"Science demands unconditional surrender to the evidence, wherever it may lead us."

"The boundary between past, present, and future is merely an illusion of human consciousness."

"Originality and independence of mind are far more valuable than mere erudition."

"The greatest discoveries often come when we ask the right questions, not when we think we already know the answers."

"A physicist looks at the world not as it appears to be, but as it fundamentally is beneath surface appearances."

"One gains immensely by being forced to think and to defend one's position against intelligent criticism."

"The future belongs to those who believe in the beauty of their visions and are willing to sacrifice for them."

"When nature refuses to be understood through ordinary reason, we must look deeper into extraordinary principles."

"Scientific progress is not the accumulation of small truths but the occasional discovery of profound revelations."

"The man who cannot periodically abandon his convictions is not a scientist but a dogmatist."

"In the face of the infinite complexity of nature, humility is the only rational response."

"Energy itself is the fundamental substance from which all things emerge and into which all things dissolve."

"The deepest principles of nature cannot be grasped without an element of wonder and awe."

"Every advance in knowledge must be accompanied by a corresponding advance in moral understanding."

"The scientist who serves only himself serves neither science nor humanity."

"Patience and perseverance are the two qualities that most reliably lead to scientific discovery."

"One should always respect the intelligence of those who disagree with you; they may see what you cannot."

"The laws of thermodynamics tell us that disorder increases over time unless energy is expended to prevent it."

"What we call matter is merely organized energy in a particular configuration."

"The ultimate test of a scientific theory is not whether it is intellectually satisfying but whether it predicts observations correctly."

"One must distinguish between the map and the territory—between our theories and the reality they attempt to describe."

"The pursuit of knowledge for its own sake is one of the noblest human endeavors, transcending all practical considerations."

"When the experiment contradicts your expectations, listen carefully to what nature is trying to tell you."

"A mind that is too certain of its convictions is a mind that has ceased to grow and learn."