The first and simplest emotion which we discover in the human mind, is curiosity.
Edmund Burke
It is, in fact, nothing short of a miracle that the modern methods of instruction have not entirely strangled the holy curiosity of inquiry.
Albert Einstein
Judge a man by his questions rather than by his answers.
Voltaire
Curiosity is lying in wait for every secret.
Ralph Waldo Emerson
Mere curiosity adds wings to every step.
Johann Wolfgang von Goethe