“If any ambitious man have a fancy to revolutionize at one effort the universal world of human thought, human opinion, and human sentiment, the opportunity is his own — the road to immortal renown lies straight, open, and unencumbered before him. All that he has to do is to write and publish a very little book. Its title should be simple — a few plain words — "My Heart Laid Bare."”

“Call for the grandest of all earthly spectacles, what is that? It is the sun going to his rest. Call for the grandest of all human sentiments, what is that? It is that man should forget his anger before he lies down to sleep.”

“The effort to understand the universe is one of the very few things which lifts human life a little above the level of farce and gives it some of the grace of tragedy.”

“I have never thought, for my part, that man's freedom consists in his being able to do whatever he wills, but that he should not, by any human power, be forced to do what is against his will.”

“Any system of thought which allows no value to human thought will destroy its own efforts. -Fingerprint.”

“I don't think my writing is sentimental, although it is a very sentimental thing to be a human being.”

“To know and feel all this and not have the words to express it makes a human a grave of his own thoughts.”

“I do not have the professional knowledge to write a scholarly article about Spinoza. But what I think about this man I can express in a few words. Spinoza was the first to apply with strict consistency the idea of an all-pervasive determinism to human thought, feeling, and action. In my opinion, his point of view has not gained general acceptance by all those striving for clarity and logical rigor only because it requires not only consistency of thought, but also unusual integrity, magnamity, and — modesty.”

“We should desire neither the immortality nor the death of any human being, whoever he may be, with whom we have to do.”

“What is straight? A line can be straight, or a street, but the human heart, oh, no, it's curved like a road through mountains.”