“I could not think without writing.”

“The principle goal of education in the schools should be creating men and women who are capable of doing new things, not simply repeating what other generations have done; men and women who are cre...”

“From this time on, the universe is built up into an aggregate of permanent objects connected by causal relations that are independent of the subject and are placed in objective space and time.”

“Play is the work of childhood.”

“The main functions of intelligence, that of inventing solutions and that of verifying them, do not necessarily involve one another. The first partakes of imagination; the second alone is properly l...”

“Logical activity is not the whole of intelligence. One can be intelligent without being particularly logical.”

“This was about more than semantics; it represented a dangerous shift in perspective.Rio was not at war, I pointed out; and even if it were, wars have rules.”

“Rules are for people with the luxury of time.”

“Rules are for those who can't think of a better way.”

“While we are actually subjected to them, the 'moods' and 'spirits' of nature point no morals. Overwhelming gaiety, insupportable grandeur, sombre desolation are flung at you. Make what you can of t...”

“...[N]ature generally in the distribution of her capacities has adapted the means to the end... [so nature's] true destination must be to produce a will, not merely good as a means to something els...”

“Morality is simply the attitude we adopt towards people we personally dislike.”

“The shorter the chain between raw food and fork, the fresher it is and the more transparent the system is.”

“If the individual, or heretic, gets hold of some essential truth, or sees some error in the system being practiced, he commits so many marginal errors himself that he is worn out before he can esta...”

“I have faith in the judicial system.”