To love truth for truth's sake is the principal part of human perfection in this world, and the seed-plot of read more

To love truth for truth's sake is the principal part of human perfection in this world, and the seed-plot of all other virtues.

Science is facts. Just as houses are made of stones, so science is made of facts. But a pile of read more

Science is facts. Just as houses are made of stones, so science is made of facts. But a pile of stones is not a house and a collection of facts is not necessarily science.

Words have ruined more souls than any devil's agency.

Words have ruined more souls than any devil's agency.

A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because read more

A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die out, and a new generation grows up that is familiar with it.

The nineteenth century planted the words which the twentieth century ripened into the atrocities of Stalin and Hitler. There is read more

The nineteenth century planted the words which the twentieth century ripened into the atrocities of Stalin and Hitler. There is hardly an atrocity committed in the twentieth century that was not foreshadowed or even advocated by some noble man of words in the nineteenth.

It is common to assume that human progress affects everyone- that even the dullest man, in these bright days, knows read more

It is common to assume that human progress affects everyone- that even the dullest man, in these bright days, knows more than any man of, say, the Eighteenth Century, and is far more civilized. This assumption is quite erroneous...The great masses of men, even in this inspired republic, are precisely where the mob was at the dawn of history. They are ignorant, they are dishonest, they are cowardly, they are ignoble. They know little if anything that is worth knowing, and there is not the slightest sign of a natural desire among them to increase their knowledge.

The criterion of truth is that it works even if nobody is prepared to acknowledge it.

The criterion of truth is that it works even if nobody is prepared to acknowledge it.

Read not to contradict and confute; nor to believe and take for granted; nor to find talk and discourse; but read more

Read not to contradict and confute; nor to believe and take for granted; nor to find talk and discourse; but to weigh and consider. Some books are to be tasted, others to be swallowed, and some few to be chewed and digested: that is, some books are to be read only in parts, others to be read, but not curiously, and some few to be read wholly, and with diligence and attention.

Challenges are what make life interesting; overcoming them is what makes life meaningful.

Challenges are what make life interesting; overcoming them is what makes life meaningful.