We have no right to assume that any physical laws exist, or if they have existed up to now, that they will continue to exist in a similar manner in the future.
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The Universe in the Light of Modern Physics (1931)Max Planck
To be alive is to feel the joy of being./ In spite of the sorrows and joys of life/ The primary joy is that of being./ That of my existence. / That I exist is the most fundamental experience is joy for me!/ I, who do not deserve to, really exist./ I, who need not, do exist!/ I, who may not, do exist.
Kuruvilla Pandikattu
Anyone who studies present and ancient affairs will easily see how in all cities and all peoples there still exist, and have always existed, the same desires and passions. Thus, it is an easy matter for him who carefully examines past events to foresee future events in a republic and to apply the remedies employed by the ancients, or, if old remedies cannot be found, to devise new ones based upon the similarity of the events. But since these matters are neglected or not understood by those who read, or, if understood, remain unknown to those who govern, the result is that the same problems always exist in every era.
Niccolo Machiavelli
When I so pressingly urge a strict observance of all the laws, let me not be understood as saying there are no bad laws, or that grievances may not arise for the redress of which no legal provisions have been made. I mean to say no such thing. But I do mean to say that although bad laws, if they exist, should be repealed as soon as possible, still, while they continue in force, for the sake of example they should be religiously observed. So also in unprovided cases. If such arise, let proper legal provisions be made for them with the least possible delay, but till then let them, if not too intolerable, be borne with.
Abraham Lincoln
The first question we should face is: What is the aim of a physical theory? To this question diverse answers have been made, but all of them may be reduced to two main principles:
"A physical theory," certain logicians have replied, "has for its object the explanation of a group of laws experimentally established."
"A physical theory," other thinkers have said, "is an abstract system whose aim is to summarize and classify logically a group of experimental laws without claiming to explain these laws...
Now these two questions — Does there exist a material reality distinct from sensible appearances? and What is the nature of reality? — do not have their source in experimental method, which is acquainted only with sensible appearances and can discover nothing beyond them. The resolution of these questions transcends the methods used by physics; it is the object of metaphysics.
Therefore, if the aim of physical theories is to explain experimental laws, theoretical physics is not an autonomous science; it is subordinate to metaphysics...
Now, to make physical theories depend on metaphysics is surely not the way to let them enjoy the privilege of universal consent.Pierre Duhem
...we admitted that everything living is born of the dead. For if the soul existed before birth, and in coming to life and being born can be born only from death and dying, must she not after death continue to exist, since she has to be born again?
Socrates
Planck, Max
Plante, Jacques
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