“Take the sum of human achievement in action, in science, in art, in literature—subtract the work of the men above forty, and while we should miss great treasures, even priceless treasures, we would practically be where we are today … The effective, moving, vitalizing work of the world is done between the ages of twenty-five and forty.”

“We shouldn't teach great books; we should teach a love of reading. Knowing the contents of a few works of literature is a trivial achievement. Being inclined to go on reading is a great achievement.”

“The lovely thing about being forty is that you can appreciate twenty-five-year-old men more.”

“People between twenty and forty are not sympathetic. The child has the capacity to do but it can’t know. It only knows when it is no longer able to do — after forty. Between twenty and forty the will of the child to do gets stronger, more dangerous, but it has not begun to learn to know yet. Since his capacity to do is forced into channels of evil through environment and pressures, man is strong before he is moral. The world’s anguish is caused by people between twenty and forty.”

“It is by going down into the abyss that we recover the treasures of life. Where you stumble, there lies your treasure.”

“Human work must be done thoroughly and honourably because we are now men; whether we ever expect to be angels, or ever were slugs, being practically no matter.”

“Much of what we called "depression" was really dissatisfaction, a result of setting a bar impossibly high or expecting treasures we weren't willing to work for.”

“The historical records of every nation are full of the doings of men of genius in all the different departments of human activity, men who in their special lines of work and ability have stood far above the rest— indeed, so far that at times (and probably more often than we know) their ideals were utterly beyond the comprehension of the people, so that not only the work that they may have done has been lost to mankind, but their very names even have not been preserved. It has been said that the history of every nation could be written in the biography of a few individuals, and that it is always the few, towering above the rest, who initiate the great forward steps in art, music, literature, science, philosophy, philanthropy, statecraft, and religion. They stand high sometimes in love of God and their fellow-men, as great saints and philanthropists; sometimes in understanding of man and Nature, as great philosophers, sages and scientists; sometimes in work for humanity, as great liberators and reformers.”

“Science has made great progress in this world. Where we used to engage a thousand men to work, now a bulldozer does the work in seconds. But that makes a thousand people useless and unemployed. While unemployment is increasing in the world, people have lost their peace of mind. The reason for this is because man has ceased to work. Due to this inaction, all kind of pains and sicknesses are increasing in the world. I want you to take the energy of the machines into yourself and work like machines!”

“For me, I think the greatest achievements of science is to allow humanity to realize that our world is comprehensible. Through science, rational thinking, we can understand how the universe works.”