The whole difference between construction and creation is exactly this: that a thing constructed can only be loved after it is constructed; but a thing created is loved before it exists.
If one devalues rationality, the world tends to fall apart.
Somewhere, something incredible is waiting to be known.
Never memorize something that you can look up.
Kindness is the language which the deaf can hear and the blind can see.
I think it is a mistake to judge science by Nobel Prizes.
The deepest sin against the human mind is to believe things without evidence.
Education is the most powerful weapon which you can use to change the world.
Refusal to believe until proof is given is a rational position; denial of all outside of our own limited experience is absurd.
It is no small art to sleep: for that purpose you must keep awake all day.