As great scientists have said and as all children know, 

it is above all by the imagination 

that we achieve perception, and compassion, and hope.

The strongest arguments prove nothing 

so long as the conclusions are not verified by experience. 

Experimental science is the queen of sciences 

and the goal of all speculation.

A wise man proportions his belief to the evidence.

Ignorance is the night of the mind, 

but a night without moon and star.

All difficult things have their origin in that which is easy, 

and great things in that which is small.

All our knowledge begins with the senses, 

proceeds then to the understanding, 

and ends with reason. 

There is nothing higher than reason.

Logic can often be reversed, 

but the effect does not precede the cause.

Without music, life would be a mistake.

Second thoughts are ever wiser.

Knowledge is an unending adventure at the edge of uncertainty.

The key to the Grail is compassion, 

suffering with, feeling another’s sorrow 

as if it were your own.

The one who finds the dynamo of compassion 

is the one who’s found the Grail.

Natural science, does not simply describe and explain nature; 

it is part of the interplay between nature and ourselves.

Every great and deep difficulty bears in itself it’s own solution. 

It forces us to change our thinking in order to find it.

Art is not, like science, a logic of references 

but a release from references and rendition of immediate experience: 

a presentation of forms, images, or ideas 

in such a way that they will communicate, 

not primarily a thought or even a feeling, but an impact.