على الرغم من أن وصف أي كتاب بأنه صعب ليس في ذاته نقداً بالطبع

“I wish to propose for the reader's favourable consideration a doctrine which ma…”

“The meta-physical creed, I shall maintain, is a mistaken outcome of the emotion…”

“We know very little, and yet it is astonishing that we know so much, and still …”

“Curious learning not only makes unpleasant things less unpleasant but also make…”