Gravitation is entirely independent of everything that influences other natural phenomena. It is not subject to absorption or refraction, no velocity of propagation has been observed. You can do whatever you please with a body, you can electrify or magnetise it, you can heat it, melt or evaporate it, decompose it chemically, its behaviour with respect to gravitation is not affected. Gravitation acts on all bodies in the same way, everywhere and always we find it in the same rigorous and simple form, which frustrates all our attempts to penetrate into its internal mechanism.
Willem de SitterRelated topics
absorption body everything find form gravitation heat mechanism natural propagation refraction respect simple velocity way whatever ActsRelated quotes
The man who has struggled bravely with the passions of the body, has fought ably against unclean spirits, and has expelled from his soul the conceptual images they provoke, should pray for a pure heart to be given him and for a spirit of integrity to be renewed within him (cf. Ps. 51:10). In other words, he should pray that by grace he may be completely emptied of evil thoughts and filled with divine thoughts, so that he may become a spiritual world of God, splendid and vast, wrought from moral, natural and theological forms of contemplation.
Maximus the Confessor
The phenomenon of the production of motion by heat has not been considered from a sufficiently general point of view. We have considered it only in machines... [for which] the phenomenon is... incomplete. It becomes difficult to recognize its principles and study its laws. ...[T]he principle of the production of motion by heat... must be considered independently of any mechanism or... particular agent. It is necessary to establish principles applicable not only to steam-engines but to all imaginable heat-engines, whatever the working substance and whatever the method by which it is operated.
Nicolas Léonard Sadi Carnot
It was in 1929 that Salvador Dali [Dali is writing about himself] brought his attention to hear upon the internal mechanism of paranoiac phenomena and envisaged the possibility of an experimental method based on the sudden power of the systematic associations proper to paranoia; this method afterwards became the delirio-critical synthesis which hears the name of "paranoiac-critical activity". Paranoia: delirium of interpretive association bearing a systematic structure. Paranoiac-critical activity: spontaneous method of irrational knowledge based upon the interpretive-critical association of delirious phenomena.
Salvador Dalí
An academic debate on any subject should concentrate on the pros and cons of the arguments presented by the two (or more) opposing sides in the debate; it should be conducted in an open and sincere atmosphere; and the natural desire (not academically wrong in itself) to win the debate should not be allowed to overpower the academic desire to arrive at the truth... And an academic debate cannot be won by the simple expedient of name-calling and label-sticking, and consequent disqualification of the opposing side from even taking part in the debate.
Shrikant Talageri
Contemporary with Vitellio and Peccam was... Roger Bacon, a man of almost universal genius, and who wrote on almost every branch of science. He frequently quotes Alhazen on the subject of optics, and seems to have carefully studied his writings, as well as those of other Arabians, which were the fountains of natural knowledge in those days, and which had been introduced into Europe by means of the Moors in Spain. Notwithstanding the pains this great man took with the subject of opticks, it does not appear that, with respect to theory, he made any considerable advance upon what Alhazen had done before him.
Joseph Priestley