"Chlorine is a deadly poison gas employed on European battlefields in World War I. Sodium is a corrosive metal which burns upon contact with water. Together they make a placid and unpoisonous material, table salt. Why each of these substances has the properties it does is a subject called chemistry."
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Science quotes (page 7 of 352)
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"Be not astonished at new ideas; for it is well known to you that a thing does not therefore cease to be true because it is not accepted by many."
"The function of ignoring, of inattention, is as vital a factor in mental progress as the function of attention itself."
"The self-same atoms which, chaotically dispersed, made the nebula, now, jammed and temporarily caught in peculiar positions, form our brains; and the 'evolution' of brains, if understood, would be simply the account of how the atoms came to be so caught and jammed."
"Coal is a portable climate. It carries the heat of the tropics to Labrador and the polar circle; and it is the means of transporting itself whithersoever it is wanted. Watt and Stephenson whispered in the ear of mankind their secret, that a half-ounce of coal will draw two tons a mile, and coal carries coal, by rail and by boat, to make Canada as warm as Calcutta, and with its comfort brings its industrial power."
"Mathematics is the key and door to the sciences."
"All men seek to be enlightened. Religion is but the most ancient and honorable way in which men have striven to make sense out of God's universe. Scientists seek the lawfulness of events. It is the task of Religion to fit man into this lawfulness."
"In the distant future I see open fields for far more important researches. Psychology will be based on a new foundation, that of the necessary acquirement of each mental power and capacity by gradation. Light will be thrown on the origin of man and his history."
"Why do humans exist? A major part of the answer: because Pikaia Gracilens survived the Burgess decimation."
"Pure mathematics is, in its way, the poetry of logical ideas."
"Reason and justice tell me there's more love for humanity in electricity and steam than in chastity and vegetarianism."
"So long as the Universe had a beginning, we could suppose it had a creator. But if the Universe is really completely self-contained, it would have neither beginning or end, it would simply be. What place then for a creator?"
"I can still recall vividly how Freud said to me, "My dear Jung, promise me never to abandon the sexual theory. That is the most essential thing of all. You see, we must make a dogma of it, an unshakable bulwark" ... In some astonishment I asked him, "A bulwark-against what?" To which he replied, "Against the black tide of mud"-and here he hesitated for a moment, then added of occultism."
"All religions, arts and sciences are branches of the same tree. All these aspirations are directed toward ennobling man's life, lifting it from the sphere of mere physical existence and leading the individual towards freedom."
"When two minds of a high order, interested in kindred subjects, come together, their conversation is chiefly remarkable for the summariness of its allusions and the rapidity of its transitions. Before one of them is half through a sentence the other knows his meaning and replies. ... His mental lungs breathe more deeply, in an atmosphere more broad and vast."
"Objective evidence and certitude are doubtless very fine ideals to play with, but where on this moonlit and dream-visited planet are they found?"
"The interpretation of dreams is the royal road to a knowledge of the unconscious activities of the mind."
"That atomic energy though harnessed by American scientists and army men for destructive purposes may be utilised by other scientists for humanitarian purposes is undoubtedly within the realm of possibility. ... An incendiary uses fire for his destructive and nefarious purpose, a housewife makes daily use of it in preparing nourishing food for mankind."
"The world is very different now. For man holds in his mortal hands the power to abolish all forms of human poverty, and all forms of human life."
"The cure for a fallacious argument is a better argument, not the suppression of ideas."