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Physical concepts are free creations of the human mind, and are not, however it may seem, uniquely determined by the external world. In our endeavor to understand reality we are somewhat like a man trying to understand the mechanism of a closed watch. He sees the face and the moving hands, even hears its ticking, but he has no way of opening the case. If he is ingenious he may form some picture of a mechanism which could be responsible for all the things he observes, but he may never be quite sure his picture is the only one which could explain his observations. He will never be able to compare his picture with the real mechanism and he cannot even imagine the possibility or the meaning of such a comparison. But he certainly believes that, as his knowledge increases, his picture of reality will become simpler and simpler and will explain a wider and wider range of his sensuous impressions. He may also believe in the existence of the ideal limit of knowledge and that it is approached by the human mind. He may call this ideal limit the objective truth. Albert Einstein

Tags:

Physical

concepts

are

free

creations

of

the

human

mind



and

are

not



however

it

may

seem



uniquely

determined

by

the

external

world



In

our

endeavor

to

understand

reality

we

are

somewhat

like

a

man

trying

to

understand

the

mechanism

of

a

closed

watch



He

sees

the

face

and

the

moving

hands



even

hears

its

ticking



but

he

has

no

way

of

opening

the

case



If

he

is

ingenious

he

may

form

some

picture

of

a

mechanism

which

could

be

responsible

for

all

the

things

he

observes



but

he

may

never

be

quite

sure

his

picture

is

the

only

one

which

could

explain

his

observations



He

will

never

be

able

to

compare

his

picture

with

the

real

mechanism

and

he

cannot

even

imagine

the

possibility

or

the

meaning

of

such

a

comparison



But

he

certainly

believes

that



as

his

knowledge

increases



his

picture

of

reality

will

become

simpler

and

simpler

and

will

explain

a

wider

and

wider

range

of

his

sensuous

impressions



He

may

also

believe

in

the

existence

of

the

ideal

limit

of

knowledge

and

that

it

is

approached

by

the

human

mind



He

may

call

this

ideal

limit

the

objective

truth



Albert

Einstein



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