Educating the mind without educating the heart is no education at all.
It is no small art to sleep: for that purpose you must keep awake all day.
Somewhere, something incredible is waiting to be known.
He who opens a school door, closes a prison.
The deepest sin against the human mind is to believe things without evidence.
Natural science does not simply describe and explain nature: it is part of the interplay between us and nature.
It is the mark of an educated mind, to entertain a thought without accepting it.
The hour of departure has arrived, and we go our ways. I to die, and you to live. Which is better God only knows.
Ask the right questions, and nature will open the doors to her secrets.