Luis de León, returning to his university after five years imprisonment by the Inquisition resumed his lectures with the words, "As we were saying yesterday..."
Whoever battles with monsters had better see that it does not turn him into a monster. And if you gaze long into an abyss, the abyss will gaze back into you.
Sixty-six times have these eyes beheld the changing scene of autumn. I have said enough about moonlight, ask no more. Only listen to the voice of pines and cedars when no wind stirs.
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore, all progress depends on the unreasonable man.
We don't just borrow words; on occasion, English has pursued other languages down alleyways to beat them unconscious and rifle their pockets for new vocabulary.
The most beautiful thing we can experience is the mysterious. It is the source of all true art and all science. He to whom this emotion is a stranger, who can no longer pause to wonder and stand rapt in awe, is as good as dead: his eyes are closed.
When a scientist states that something is possible, he is almost certainly right. When he states that something is impossible, he is very probably wrong.
Great spirits have always found violent opposition from mediocrities. The latter cannot understand it when a man does not thoughtlessly submit to hereditary prejudices but honestly and courageously uses his intelligence.
But 'glory' doesn't mean 'a nice knock-down argument,' Alice objected. 'When I use a word', Humpty Dumpty said in a rather scornful tone, 'it means just what I choose it to mean-neither more or less.'
The difference between the almost right word and the right word is really a large matter -- 'tis the difference between the lightning bug and the lightning.
'The master was an old turtle, we used to call him Tortoise.' 'Why did you call him tortoise if he wasn't one?' Alice asked. 'We called him Tortoise because he taught us' said the Mock Turtle.