Points & Lines.

I am always doing that which I cannot do, in order that I may learn how to do it.
—Pablo Picasso

What has been proven by a correct procedure gains nothing in truth if all scholars agree, and loses nothing if all the people on earth are of an opposite opinion.
—Maimonides,  Guide for the Perplexed II:15

There are things which the human mind has the capacity to grasp...and there are things which the mind can in no way fathom.
—Maimonides, Guide for the Perplexed, I:31

I keep the subject of my inquiry constantly before me, and wait till the first dawning opens, gradually, by little and little, into a full and clear light.
—Sir Isaac Newton

All is foreseen, and yet free will is granted.
—Rabbi Akiba, Pirke Avot III:19

Life and death are of supreme importance. 
Time swiftly passes by, and with it our only chance. 
Each of us must aspire to awaken. 
Be aware! Do not squander your life!  
—Zen Gatha on life and death

...It is almost impossible for me to read contemporary mathematicians who, instead of saying "Petya washed his hands", write simply "There is a t < 0 such that the image of t under the natural mapping t —> Petya(t ) belongs to the set of dirty hands, and an s , witht < s < 0 , such that the image of  sunder the above-mentioned mapping belongs to the complement of the set defined in the preceding sentence".
—Vladimir Arnold

Doubt is not a pleasant condition, but certainty is absurd.
—Voltaire

From the vast mass of facts, to single out what is worth noting, is actually the essence of what we call art. It is also mathematics.
—L.C. Young

Science is not only compatible with spirituality, it is a profound source of spirituality. When we recognize our place in an immensity of light-years and in the passage of ages, when we grasp the intricacy, beauty, and subtlety of life, then that soaring feeling, that sense of elation and humility combined is surely spiritual.
—Carl Sagan, The Demon-haunted World

 The true teacher defends his students against his own personal influence. He inspires self-trust. He guides their eyes from himself to the spirit that quickens him. He will have no disciples.
—Amos Bronson Alcott