“There is an honesty in science which demands that the best means be used for the determination of truth. Certainly there are many sorts of truth in the universe, and many aspects of truth must be taken into account if man is to live most effectively in the social organization to which he belongs. But in regard to matter---the stuff of which both non-living materials and living organisms are made---scientists believe that there is no better way of obtaining information than that provided by human sense organs. No theory, no philosophy, no body of theology, no political expediency, no wishful thinking, can provide a satisfactory substitute for the observation of material objects and of the way in which they behave.”

Source: The Secret Oral Teachings in the Tibetan Buddhist Sects (1964)

Principles of Biochemistry, Ch. 1 : The Foundations of Biochemistry

Under Fire (1916), Ch. 24 - The Dawn
Context: There are all those things against you. Against you and your great common interests which as you dimly saw are the same thing in effect as justice, there are not only the sword-wavers, the profiteers, and the intriguers.
There is not only the prodigious opposition of interested parties — financiers, speculators great and small, armorplated in their banks and houses, who live on war and live in peace during war, with their brows stubbornly set upon a secret doctrine and their faces shut up like safes.
There are those who admire the exchange of flashing blows, who hail like women the bright colors of uniforms; those whom military music and the martial ballads poured upon the public intoxicate as with brandy; the dizzy-brained, the feeble-minded, the superstitious, the savages.
There are those who bury themselves in the past, on whose lips are the sayings only of bygone days, the traditionalists for whom an injustice has legal force because it is perpetuated, who aspire to be guided by the dead, who strive to subordinate progress and the future and all their palpitating passion to the realm of ghosts and nursery-tales.
With them are all the parsons, who seek to excite you and to lull you to sleep with the morphine of their Paradise, so that nothing may change. There are the lawyers, the economists, the historians — and how many more? — who befog you with the rigmarole of theory, who declare the inter-antagonism of nationalities at a time when the only unity possessed by each nation of to-day is in the arbitrary map-made lines of her frontiers, while she is inhabited by an artificial amalgam of races; there are the worm-eaten genealogists, who forge for the ambitious of conquest and plunder false certificates of philosophy and imaginary titles of nobility. The infirmity of human intelligence is short sight. In too many cases, the wiseacres are dunces of a sort, who lose sight of the simplicity of things, and stifle and obscure it with formulae and trivialities. It is the small things that one learns from books, not the great ones.
And even while they are saying that they do not wish for war they are doing all they can to perpetuate it. They nourish national vanity and the love of supremacy by force. "We alone," they say, each behind his shelter, "we alone are the guardians of courage and loyalty, of ability and good taste!" Out of the greatness and richness of a country they make something like a consuming disease. Out of patriotism — which can be respected as long as it remains in the domain of sentiment and art on exactly the same footing as the sense of family and local pride, all equally sacred — out of patriotism they make a Utopian and impracticable idea, unbalancing the world, a sort of cancer which drains all the living force, spreads everywhere and crushes life, a contagious cancer which culminates either in the crash of war or in the exhaustion and suffocation of armed peace.
They pervert the most admirable of moral principles. How many are the crimes of which they have made virtues merely by dowering them with the word "national"? They distort even truth itself. For the truth which is eternally the same they substitute each their national truth. So many nations, so many truths; and thus they falsify and twist the truth.
Those are your enemies. All those people whose childish and odiously ridiculous disputes you hear snarling above you — "It wasn't me that began, it was you!" — "No, it wasn't me, it was you!" — "Hit me then!" — "No, you hit me!" — those puerilities that perpetuate the world's huge wound, for the disputants are not the people truly concerned, but quite the contrary, nor do they desire to have done with it; all those people who cannot or will not make peace on earth; all those who for one reason or another cling to the ancient state of things and find or invent excuses for it — they are your enemies!
They are your enemies as much as those German soldiers are to-day who are prostrate here between you in the mud, who are only poor dupes hatefully deceived and brutalized, domestic beasts. They are your enemies, wherever they were born, however they pronounce their names, whatever the language in which they lie. Look at them, in the heaven and on the earth. Look at them, everywhere! Identify them once for all, and be mindful for ever!

Source: Living Systems: Basic Concepts (1969), p. 51; Opening paragraph

Source: Truth and Truthfulness (2002), p. 2

Source: Clockwork Prince

The Politically Incorrect Guide to Islam, Chapter 1, page 3 https://books.google.com.br/books?id=_7RD2jwMU2wC&printsec=frontcover&hl=pt-BR#v=onepage&q&f=false

In response to Paul Begala's question of which 2004 presidential candidate would provide the best comedic material if elected.
Crossfire Appearance (2004)

Indian Spirituality and Life (1919)
Context: Indian religion never considered intellectual or theological conceptions about the supreme Truth to be the one thing of central importance. To pursue that Truth under whatever conception or whatever form, to attain to it by inner experience, to live in it in consciousness, this it held to be the sole thing needful. One school or sect might consider the real self of man to be indivisibly one with the universal Self or the supreme Spirit. Another might regard man as one with the Divine in essence but different from him in Nature. A third might hold God, Nature and the individual soul in man to be three eternally different powers of being. But for all the truth of Self held with equal force; for even to the Indian dualist God is the supreme self and reality in whom and by whom Nature and man live, move and have their being and, if you eliminate God from his view of things, Nature and man would lose for him all their meaning and importance. The Spirit, universal Nature (whether called Maya, Prakriti or Shakti) and the soul in living beings, Jiva, are the three truths which are universally admitted by all the many religious sects and conflicting religious philosophies of India. Universal also is the admission that the discovery of the inner spiritual self in man, the divine soul in him, and some kind of living and uniting contact or absolute unity of the soul in man with God or supreme Self or eternal Brahman is the condition of spiritual perfection. It is open to us to conceive and have experience of the Divine as an impersonal Absolute and Infinite or to approach and know and feel Him as a transcendent and universal sempiternal Person: but whatever be our way of reaching him, the one important truth of spiritual experience is that he is in the heart and centre of all existence and all existence is in him and to find him is the great self-finding.