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Who said: “Dangerous... to take shelter under a tree, during a thunder-gust. It has been fatal to many, both men and beasts.”
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Home > Category Index for Science Quotations > Category Index O

Scientist Quotations - Categories Index for Initial O

This list includes science quotes from archaeologists, biologists, chemists, geologists, inventors and inventions, mathematicians, physicists plus pioneers in medicine, science events and technology.

This index gives quotes listed under category headings. When the category is a scientist name, the index is for any reference made ABOUT the scientist BY another person.

Oak (16)
Oak Tree (1)
Oar (2)
Oarsman (1)
Oasis (1)
Oath (10)
Ob (1)
Obduracy (1)
Obdurate (1)
Obedience (20)
Obedient (9)
Obelisk (2)
Obervation (4)
Obesity (5)
Obey (46)
Object (435)
Object-Oriented (1)
Objected (1)
Objection (34)
Objectionable (1)
Objectionableness (1)
Objective (95)
Objectively (6)
Objectivity (17)
Objectivivity (1)
Obligation (26)
Obligatory (3)
Oblige (6)
Obliged (6)
Oblique (1)
Obliterate (2)
Oblivion (10)
Oblivious (9)
Oblong (1)
Obscene (3)
Obscenity (4)
Obscurantism (3)
Obscuration (1)
Obscure (65)
Obscuring (1)
Obscurity (28)
Obsequious (1)
Observable (21)
Observance (1)
Observation (590)
Observational (15)
Observatory (18)
Observe (178)
Observed (149)
Observer (48)
Observing (2)
Obsessed (2)
Obsession (13)
Obsessive (3)
Obsessiveness (1)
Obsolescence (4)
Obsolescent (2)
Obsolete (15)
Obstacle (42)
Obstetrician (1)
Obstetrics (3)
Obstinacy (3)
Obstinate (5)
Obstinately (2)
Obstruct (3)
Obstruction (4)
Obtain (163)
Obtainable (1)
Obtaining (5)
Obtuse (2)
Obtuseness (1)
Obviation (1)
Obvious (128)
Obviously (11)
Obviousness (3)
Occam (1)
Occam's Razor (3)
Occasion (87)
Occasional (23)
Occasionally (5)
Occult (9)
Occultism (1)
Occupant (1)
Occupation (51)
Occupational Disease (1)
Occupied (45)
Occupy (27)
Occupying (1)
Occur (151)
Occurence (3)
Occurred (2)
Occurrence (53)
Occurring (1)
Ocean (213)
Ocean Acidification (1)
Ocean Floor (6)
Ocean Health Index (1)
Ocean Pollution (10)
Oceanic (1)
Oceanographer (1)
Oceanography (17)
Oceanus (1)
Ockham's Razor (2)
Octahedron (1)
Octane (1)
Octave (3)
Octavo (1)
October (5)
Octohedron (1)
Octopus (2)
Ocular (3)
Odd (15)
Oddball (2)
Oddity (4)
Oddly (3)
Odds (6)
Ode (3)
Odious (3)
Odor (11)
Odour (1)
Odyssey (1)
Oedipus (2)
Oedipus Complex (1)
OEM (1)
Oenipodes (1)
Of Course (22)
Off (1)
Off The Shelf (1)
Off-Chance (1)
Off-Shore (1)
Offence (4)
Offend (7)
Offense (4)
Offensive (4)
Offer (142)
Offered (1)
Offering (2)
Offhand (1)
Office (71)
Officer (12)
Official (7)
Offset (3)
Offshoot (1)
Offshore (3)
Offspring (27)
Oft (1)
Oft-Times (1)
Often (109)
Ohio (1)
Ohm (5)
Ohm's Law (1)
Oikos (1)
Oil (65)
Oil Company (1)
Oil Paint (1)
Oil Rig (1)
Oil Shale (1)
Oil Shortage (1)
Oil Spill (6)
Oil Well (1)
Oily (1)
Ointment (1)
OK (1)
Okapis (1)
Old (496)
Old Age (35)
Old Man (5)
Old West (2)
Old World (8)
Old-Fashioned (9)
Old-Growth (2)
Old-Time (1)
Older (7)
Oldest (9)
Olefin (1)
Olfactory (2)
Oligocene (1)
Olive (1)
Olive Oil (1)
Oliver (1)
Olmstead_Francis (1)
Ologist (1)
Olympic (1)
Olympic Peninsula (1)
Olympus (1)
Omelet (1)
Omen (2)
Ominous (5)
Omission (1)
Omit (12)
Omitted (1)
Omne Exit Infinitum (1)
Omnibeneficent (1)
Omnibus (2)
Omnipotence (4)
Omnipotent (13)
Omnipresent (3)
Omniscience (3)
Omniscient (6)
Omnivore (1)
On The Contrary (1)
On The Other Hand (40)
Once (4)
One (6)
One-Celled (1)
One-Eyed (1)
One-Fortieth (1)
One-Fourth (1)
One-Page (1)
One-Sided (2)
One-Thing-After-Another (1)
One-Thing-Reciprocating-Another (1)
One-Third (1)
One-Thirty (1)
One-Way (2)
Oneness (6)
Oneself (33)
Onion (9)
Online (4)
Onlooker (1)
Only (2)
Ontogeny (10)
Ontography (1)
Ontological (2)
Ontology (1)
Onward (6)
Ooze (2)
Opal (1)
Opaque (7)
OpArt (1)
OPEC (1)
Open (277)
Open Access (1)
Open Mind (1)
Open Space (1)
Open Up (2)
Open_Source (1)
Open-Minded (2)
Open-Mouthed (1)
Open-Stack (1)
Opened (2)
Opener (1)
Opening (15)
Opening Night (1)
Openly (1)
Openness (8)
Opera (3)
Operand (1)
Operant (1)
Operat (1)
Operate (19)
Operating (4)
Operating Room (1)
Operating Table (2)
Operation (219)
Operational Research (1)
Operations (107)
Operative (10)
Operator (4)
Ophelia (2)
Ophthalmoscope (1)
Opiate (2)
Opinion (289)
Opium (7)
Opossum (3)
Opponent (23)
Opportune (1)
Opportunist (3)
Opportunistic (1)
Opportunity (93)
Oppose (27)
Opposed (3)
Opposing (1)
Opposite (110)
Opposition (49)
Oppressed (2)
Oppression (6)
Oppressive (2)
Opprobium (1)
Opprobrium (1)
Opt (1)
Opthalmologist (1)
Optic (2)
Optical (11)
Optical Activity (1)
Optical Fibre (1)
Optical Grating (1)
Optician (1)
Opticks (2)
Optics (24)
Optimal (4)
Optimally (2)
Optimism (17)
Optimist (8)
Optimistic (1)
Optimize (1)
Optimum (2)
Option (10)
Optional (3)
Optometry (1)
Or- Ganization (1)
Oracle (5)
Oral (2)
Orange (15)
Orange-Painted (1)
Orangutan (1)
Oration (2)
Orator (3)
Oratory (1)
Orb (20)
Orbit (85)
Orbital (4)
Orbitals (2)
Orbiting (1)
Orchard (4)
Orchestra (3)
Orchestration (2)
Orchid (4)
Ordain (4)
Ordained (2)
Ordainer (1)
Ordeal (1)
Order (638)
Order Of Magnitude (5)
Ordered (2)
Ordering (1)
Orderliness (9)
Orderly (38)
Ordinance (2)
Ordinarily (1)
Ordinariness (1)
Ordinary (165)
Ordinate (1)
Ordnance (2)
Ore (14)
Oregon (1)
Organ (118)
Organ Donation (3)
Organ Donations (1)
Organ Pipe (1)
Organelle (1)
Organic (161)
Organic Chemist (2)
Organic Chemistry (41)
Organic Compound (3)
Organic Life (2)
Organic Reaction (1)
Organic-Only (1)
Organically (1)
Organisation (7)
Organise (3)
Organised (1)
Organism (231)
Organist (1)
Organization (118)
Organize (33)
Organized (9)
Organizer (1)
Organon (2)
Orgasm (2)
Orgel's Rule (1)
Orgy (3)
Orient (5)
Oriental (1)
Orientation (3)
Oriented (1)
Orifice (2)
Origami (1)
Origin (250)
Origin Of Life (37)
Origin Of Man (9)
Origin Of Species (42)
Origin Of The Earth (13)
Origin Of The Solar System (2)
Origin Of The Species (1)
Origin Of The Universe (20)
Original (60)
Original Sin (1)
Originality (21)
Originally (7)
OriginalMatter (1)
Originate (39)
Origination (7)
Originative (1)
Originator (7)
Orion (1)
Orkney (1)
Ornament (20)
Ornamentation (1)
Ornithologist (1)
Ornithology (21)
Orogeny (1)
Orphan (1)
Orpheus (2)
Orr_Allen (1)
Orrery (1)
Orse (1)
Orthodox (4)
Orthodoxy (11)
Orthogonal (1)
Orthomolecular (1)
Orville (1)
Oryx (1)
Osama (1)
Oscillate (2)
Oscillation (13)
Osmium (3)
Osmosis (3)
Osprey (1)
Ossicle (1)
Ossification (1)
Ossified (2)
Ossifrage (1)
Ostensibly (1)
Ostentation (1)
Osteoporosis (1)
Ostracize (1)
Ostrich (1)
Ostwald_Carl (2)
Ostwald_Friedrich (1)
OTEC (1)
Other (2232)
Other Hand (2)
Others (1)
Otherwise (26)
Otter (2)
Otto_Shawn (1)
Ought (3)
Ouml (1)
Ounce (9)
Ourang-Outang (1)
Ours (4)
Ourself (20)
Ourselves (247)
Ouside (1)
Ousting (1)
Out (2)
Out Of Order (2)
Out Of Reach (1)
Out Of Touch (1)
Out-Blaz (1)
Out-Of-Date (1)
Out-Of-Door (1)
Out-OfDoors (1)
Outburst (1)
Outcast (1)
Outcome (15)
Outcrop (1)
Outcry (3)
Outdated (1)
Outdoors (3)
Outer (13)
Outer Space (6)
Outer World (1)
Outermost (1)
Outfit (2)
Outgoing (1)
Outgrow (4)
Outgrowth (3)
Outlast (3)
Outlaw (1)
Outlawing (1)
Outlet (3)
Outline (11)
Outlive (4)
Outlook (32)
Outmoded (2)
Outnumber (2)
Outperform (1)
Outpost (2)
Outpouring (1)
Output (12)
Outrage (3)
Outrageous (1)
Outrank (1)
Outrowth (1)
Outrun (2)
Outsell (1)
Outset (7)
Outside (141)
Outsider (7)
Outskirts (2)
Outsourcing (1)
Outspokenness (1)
Outstanding (16)
Outstretched (1)
Outstrip (4)
Outward (7)
Outwards (1)
Outweigh (2)
Outweighed (1)
Outwit (6)
Oval Office (1)
Ovarium (1)
Ovary (2)
Oven (5)
Over-Hyped (1)
Over-Population (1)
Over-Rated (1)
Over-Ride (2)
Over-Strict (1)
Overabundance (1)
Overall (10)
Overbalancing (1)
Overboard (3)
Overbuild (1)
Overburdening (1)
Overcivilised (1)
Overcoat (1)
Overcome (40)
Overcoming (3)
Overdo (2)
Overdose (1)
Overdraft (1)
Overeat (1)
Overeating (1)
Overemphasis (1)
Overestimate (3)
Overfishing (27)
Overflow (10)
Overgrazing (3)
Overhaul (1)
Overhead (1)
Overjoyed (1)
Overlap (9)
Overload (1)
Overlook (32)
Overlooking (3)
Overly (1)
Overmodest (1)
Overnight (2)
Overpopulate (1)
Overpopulation (6)
Overpower (1)
Overpowering (1)
Overrated (1)
Override (1)
Overruling (1)
Overseas (1)
Overseer (2)
Overshadow (2)
Overshoe (1)
Overshot (1)
Oversight (4)
Oversimplification (1)
Overstate (1)
Overstatement (1)
Overstay (2)
Overt (1)
Overtake (2)
Overthrow (5)
Overthrown (8)
Overtime (1)
Overtone (3)
Overturn (2)
Overturning (1)
Overuse (1)
Overview (2)
Overweening (1)
Overweight (1)
Overwhelm (5)
Overwhelmed (6)
Overwhelming (30)
Overwhelmingly (3)
Overwork (2)
Overworked (1)
Ovulation (1)
Ovule (1)
Ovum (4)
Owe (70)
Owing (39)
Owl (3)
Owner (5)
Ownership (1)
Owning (1)
Ox (5)
Oxalic Acid (1)
Oxcart (1)
Oxen (8)
Oxford (16)
Oxidation (8)
Oxide (1)
OxideLens (1)
Oxydonor (1)
Oxygen (77)
Oxymoron (1)
Oyster (12)
Oyu (1)
Ozone (7)
Ozone Layer (3)


Carl Sagan Thumbnail In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion. (1987) -- Carl Sagan
Quotations by:Albert EinsteinIsaac NewtonLord KelvinCharles DarwinSrinivasa RamanujanCarl SaganFlorence NightingaleThomas EdisonAristotleMarie CurieBenjamin FranklinWinston ChurchillGalileo GalileiSigmund FreudRobert BunsenLouis PasteurTheodore RooseveltAbraham LincolnRonald ReaganLeonardo DaVinciMichio KakuKarl PopperJohann GoetheRobert OppenheimerCharles Kettering  ... (more people)

Quotations about:Atomic  BombBiologyChemistryDeforestationEngineeringAnatomyAstronomyBacteriaBiochemistryBotanyConservationDinosaurEnvironmentFractalGeneticsGeologyHistory of ScienceInventionJupiterKnowledgeLoveMathematicsMeasurementMedicineNatural ResourceOrganic ChemistryPhysicsPhysicianQuantum TheoryResearchScience and ArtTeacherTechnologyUniverseVolcanoVirusWind PowerWomen ScientistsX-RaysYouthZoology  ... (more topics)
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- 100 -
Sophie Germain
Gertrude Elion
Ernest Rutherford
James Chadwick
Marcel Proust
William Harvey
Johann Goethe
John Keynes
Carl Gauss
Paul Feyerabend
- 90 -
Antoine Lavoisier
Lise Meitner
Charles Babbage
Ibn Khaldun
Euclid
Ralph Emerson
Robert Bunsen
Frederick Banting
Andre Ampere
Winston Churchill
- 80 -
John Locke
Bronislaw Malinowski
Bible
Thomas Huxley
Alessandro Volta
Erwin Schrodinger
Wilhelm Roentgen
Louis Pasteur
Bertrand Russell
Jean Lamarck
- 70 -
Samuel Morse
John Wheeler
Nicolaus Copernicus
Robert Fulton
Pierre Laplace
Humphry Davy
Thomas Edison
Lord Kelvin
Theodore Roosevelt
Carolus Linnaeus
- 60 -
Francis Galton
Linus Pauling
Immanuel Kant
Martin Fischer
Robert Boyle
Karl Popper
Paul Dirac
Avicenna
James Watson
William Shakespeare
- 50 -
Stephen Hawking
Niels Bohr
Nikola Tesla
Rachel Carson
Max Planck
Henry Adams
Richard Dawkins
Werner Heisenberg
Alfred Wegener
John Dalton
- 40 -
Pierre Fermat
Edward Wilson
Johannes Kepler
Gustave Eiffel
Giordano Bruno
JJ Thomson
Thomas Kuhn
Leonardo DaVinci
Archimedes
David Hume
- 30 -
Andreas Vesalius
Rudolf Virchow
Richard Feynman
James Hutton
Alexander Fleming
Emile Durkheim
Benjamin Franklin
Robert Oppenheimer
Robert Hooke
Charles Kettering
- 20 -
Carl Sagan
James Maxwell
Marie Curie
Rene Descartes
Francis Crick
Hippocrates
Michael Faraday
Srinivasa Ramanujan
Francis Bacon
Galileo Galilei
- 10 -
Aristotle
John Watson
Rosalind Franklin
Michio Kaku
Isaac Asimov
Charles Darwin
Sigmund Freud
Albert Einstein
Florence Nightingale
Isaac Newton


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