Thought is subversive and revolutionary, destructive and terrible, Thought is merciless to privilege, established institutions, and comfortable habit. Thought is great and swift and free.

What men really want is not knowledge but certainty.

It is only in marriage with the world that our ideals can bear fruit; divorced from it, they remain barren.

What hunger is in relation to food, zest is in relation to life.

It is in the nature of imperialism that citizens of the imperial power are always among the last to know-or care-about circumstances in the colonies.

Whether science-and indeed civilization in general-can long survive depends upon psychology, that is to say, it depends upon what human beings desire.

In the part of this universe that we know there is great injustice, and often the good suffer, and often the wicked prosper, and one hardly knows which of those is the more annoying.