Louis de Broglie

Physics French 1892 – 1987 397 quotes

Proposed the wave nature of electrons and suggested that all matter has wave-like properties.

Most quoted

"The fundamental idea of my thesis was the following: The experiment of Young, the diffraction of X-rays, the photoelectric effect, the Compton effect, all these phenomena show that light has a dual nature, sometimes wave, sometimes corpuscle. Why should not matter also have a dual nature?"

— from Nobel Lecture, 1929

"The idea of wave-particle duality, which is at the heart of quantum mechanics, was born from the realization that light, previously considered a wave, also exhibits particle-like properties, and conversely, matter, previously considered particles, also exhibits wave-like properties."

— from General writings/lectures

"In space-time, everything which for each of us constitutes the past, the present, and the future is given in block... Each observer, as his time passes, discovers, so to speak, new slices of space-time which appear to him as successive aspects of the material world."

— from The Revolution in Physics

All quotes by Louis de Broglie (397)

I often sought inspiration from the works of great thinkers, both scientific and philosophical.

Private notes

The concept of pilot waves, though controversial, offered a potential path to a more deterministic interpretation of quantum mechanics.

Correspondence with David Bohm

I believe that science and art, in their highest forms, both strive to understand and express the truth of existence.

Letter to an artist friend

The pursuit of knowledge is a lifelong journey, full of unexpected turns and profound revelations.

Diary entry

My doctoral thesis was a bold step, but I felt a strong conviction in the validity of my ideas.

Retrospective notes 1924

The mathematical elegance of wave mechanics was deeply satisfying to me.

Private notes

I always tried to maintain an open mind, even when faced with strong opposition to my theories.

Letter to a colleague

The implications of quantum mechanics extend far beyond the realm of physics, touching upon philosophy and even spirituality.

Correspondence with a theologian

The support of my family throughout my academic career was invaluable.

Autobiographical notes

I often found solace and clarity in long walks, allowing my thoughts to wander freely.

Diary entry

The universe is a grand symphony, and physics is our attempt to understand its harmonies.

Letter to a student

I believe in the power of intuition, guided by rigorous logical reasoning.

Private notes

The quantum world is a realm of probabilities, not certainties, which can be unsettling but also profoundly liberating.

Correspondence with a philosopher

My work was a bridge between the classical and quantum worlds, attempting to reconcile their apparent contradictions.

Lecture notes

The intellectual camaraderie among physicists during the early 20th century was truly remarkable.

Memoirs

I always encouraged my students to question assumptions and to think independently.

Letter to a former student

The universe is not just a collection of particles, but a dynamic interplay of waves and fields.

Private notes

The search for a deeper understanding of reality is a fundamental human endeavor.

Diary entry

I am grateful for the opportunity to have contributed, in my own small way, to the advancement of human knowledge.

Autobiographical notes

The wave nature of matter is not just a theoretical construct, but a verifiable experimental fact.

Lecture notes